Remove parts of //cc we aren't using

cc/trees/layer_tree_host_unittest.cc

-// Copyright 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "cc/trees/layer_tree_host.h"
-
-#include <algorithm>
-
-#include "base/auto_reset.h"
-#include "base/synchronization/lock.h"
-#include "cc/animation/timing_function.h"
-#include "cc/debug/frame_rate_counter.h"
-#include "cc/layers/content_layer.h"
-#include "cc/layers/content_layer_client.h"
-#include "cc/layers/io_surface_layer.h"
-#include "cc/layers/layer_impl.h"
-#include "cc/layers/painted_scrollbar_layer.h"
-#include "cc/layers/picture_layer.h"
-#include "cc/layers/solid_color_layer.h"
-#include "cc/output/begin_frame_args.h"
-#include "cc/output/compositor_frame_ack.h"
-#include "cc/output/copy_output_request.h"
-#include "cc/output/copy_output_result.h"
-#include "cc/output/output_surface.h"
-#include "cc/output/swap_promise.h"
-#include "cc/quads/draw_quad.h"
-#include "cc/quads/io_surface_draw_quad.h"
-#include "cc/quads/tile_draw_quad.h"
-#include "cc/resources/prioritized_resource.h"
-#include "cc/resources/prioritized_resource_manager.h"
-#include "cc/resources/resource_update_queue.h"
-#include "cc/test/fake_content_layer.h"
-#include "cc/test/fake_content_layer_client.h"
-#include "cc/test/fake_content_layer_impl.h"
-#include "cc/test/fake_layer_tree_host_client.h"
-#include "cc/test/fake_output_surface.h"
-#include "cc/test/fake_painted_scrollbar_layer.h"
-#include "cc/test/fake_picture_layer.h"
-#include "cc/test/fake_picture_layer_impl.h"
-#include "cc/test/fake_picture_pile.h"
-#include "cc/test/fake_proxy.h"
-#include "cc/test/fake_scoped_ui_resource.h"
-#include "cc/test/geometry_test_utils.h"
-#include "cc/test/impl_side_painting_settings.h"
-#include "cc/test/layer_tree_test.h"
-#include "cc/test/test_shared_bitmap_manager.h"
-#include "cc/test/test_web_graphics_context_3d.h"
-#include "cc/trees/layer_tree_host_impl.h"
-#include "cc/trees/layer_tree_impl.h"
-#include "cc/trees/single_thread_proxy.h"
-#include "cc/trees/thread_proxy.h"
-#include "gpu/GLES2/gl2extchromium.h"
-#include "skia/ext/refptr.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "third_party/khronos/GLES2/gl2.h"
-#include "third_party/khronos/GLES2/gl2ext.h"
-#include "third_party/skia/include/core/SkPicture.h"
-#include "ui/gfx/frame_time.h"
-#include "ui/gfx/geometry/point_conversions.h"
-#include "ui/gfx/geometry/size_conversions.h"
-#include "ui/gfx/geometry/vector2d_conversions.h"
-
-using testing::_;
-using testing::AnyNumber;
-using testing::AtLeast;
-using testing::Mock;
-
-namespace cc {
-namespace {
-
-class LayerTreeHostTest : public LayerTreeTest {
- public:
-  LayerTreeHostTest() : contents_texture_manager_(nullptr) {}
-
-  void DidInitializeOutputSurface() override {
-    contents_texture_manager_ = layer_tree_host()->contents_texture_manager();
-  }
-
- protected:
-  PrioritizedResourceManager* contents_texture_manager_;
-};
-
-// Test if the LTHI receives ReadyToActivate notifications from the TileManager
-// when no raster tasks get scheduled.
-class LayerTreeHostTestReadyToActivateEmpty : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestReadyToActivateEmpty()
-      : did_notify_ready_to_activate_(false),
-        all_tiles_required_for_activation_are_ready_to_draw_(false),
-        required_for_activation_count_(0) {}
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    const std::vector<PictureLayerImpl*>& layers =
-        impl->sync_tree()->picture_layers();
-    required_for_activation_count_ = 0;
-    for (const auto& layer : layers) {
-      FakePictureLayerImpl* fake_layer =
-          static_cast<FakePictureLayerImpl*>(layer);
-      required_for_activation_count_ +=
-          fake_layer->CountTilesRequiredForActivation();
-    }
-  }
-
-  void NotifyReadyToActivateOnThread(LayerTreeHostImpl* impl) override {
-    did_notify_ready_to_activate_ = true;
-    all_tiles_required_for_activation_are_ready_to_draw_ =
-        impl->tile_manager()->IsReadyToActivate();
-    EndTest();
-  }
-
-  void AfterTest() override {
-    EXPECT_TRUE(did_notify_ready_to_activate_);
-    EXPECT_TRUE(all_tiles_required_for_activation_are_ready_to_draw_);
-    EXPECT_EQ(size_t(0), required_for_activation_count_);
-  }
-
- protected:
-  bool did_notify_ready_to_activate_;
-  bool all_tiles_required_for_activation_are_ready_to_draw_;
-  size_t required_for_activation_count_;
-};
-
-SINGLE_AND_MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestReadyToActivateEmpty);
-
-// Test if the LTHI receives ReadyToActivate notifications from the TileManager
-// when some raster tasks flagged as REQUIRED_FOR_ACTIVATION got scheduled.
-class LayerTreeHostTestReadyToActivateNonEmpty
-    : public LayerTreeHostTestReadyToActivateEmpty {
- public:
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-    scoped_refptr<FakePictureLayer> root_layer =
-        FakePictureLayer::Create(&client_);
-    root_layer->SetBounds(gfx::Size(1024, 1024));
-    root_layer->SetIsDrawable(true);
-
-    layer_tree_host()->SetRootLayer(root_layer);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void AfterTest() override {
-    EXPECT_TRUE(did_notify_ready_to_activate_);
-    EXPECT_TRUE(all_tiles_required_for_activation_are_ready_to_draw_);
-    EXPECT_LE(size_t(1), required_for_activation_count_);
-  }
-
- private:
-  FakeContentLayerClient client_;
-};
-
-// Multi-thread only because in single thread the commit goes directly to the
-// active tree, so notify ready to activate is skipped.
-MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestReadyToActivateNonEmpty);
-
-// Test if the LTHI receives ReadyToDraw notifications from the TileManager when
-// no raster tasks get scheduled.
-class LayerTreeHostTestReadyToDrawEmpty : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestReadyToDrawEmpty()
-      : did_notify_ready_to_draw_(false),
-        all_tiles_required_for_draw_are_ready_to_draw_(false),
-        required_for_draw_count_(0) {}
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void NotifyReadyToDrawOnThread(LayerTreeHostImpl* impl) override {
-    did_notify_ready_to_draw_ = true;
-    const std::vector<PictureLayerImpl*>& layers =
-        impl->active_tree()->picture_layers();
-    all_tiles_required_for_draw_are_ready_to_draw_ =
-        impl->tile_manager()->IsReadyToDraw();
-    for (const auto& layer : layers) {
-      FakePictureLayerImpl* fake_layer =
-          static_cast<FakePictureLayerImpl*>(layer);
-      required_for_draw_count_ += fake_layer->CountTilesRequiredForDraw();
-    }
-
-    EndTest();
-  }
-
-  void AfterTest() override {
-    EXPECT_TRUE(did_notify_ready_to_draw_);
-    EXPECT_TRUE(all_tiles_required_for_draw_are_ready_to_draw_);
-    EXPECT_EQ(size_t(0), required_for_draw_count_);
-  }
-
- protected:
-  bool did_notify_ready_to_draw_;
-  bool all_tiles_required_for_draw_are_ready_to_draw_;
-  size_t required_for_draw_count_;
-};
-
-SINGLE_AND_MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestReadyToDrawEmpty);
-
-// Test if the LTHI receives ReadyToDraw notifications from the TileManager when
-// some raster tasks flagged as REQUIRED_FOR_DRAW got scheduled.
-class LayerTreeHostTestReadyToDrawNonEmpty
-    : public LayerTreeHostTestReadyToDrawEmpty {
- public:
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-    scoped_refptr<FakePictureLayer> root_layer =
-        FakePictureLayer::Create(&client_);
-    root_layer->SetBounds(gfx::Size(1024, 1024));
-    root_layer->SetIsDrawable(true);
-
-    layer_tree_host()->SetRootLayer(root_layer);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void AfterTest() override {
-    EXPECT_TRUE(did_notify_ready_to_draw_);
-    EXPECT_TRUE(all_tiles_required_for_draw_are_ready_to_draw_);
-    EXPECT_LE(size_t(1), required_for_draw_count_);
-  }
-
- private:
-  FakeContentLayerClient client_;
-};
-
-// Note: With this test setup, we only get tiles flagged as REQUIRED_FOR_DRAW in
-// single threaded mode.
-SINGLE_THREAD_IMPL_TEST_F(LayerTreeHostTestReadyToDrawNonEmpty);
-
-// Two setNeedsCommits in a row should lead to at least 1 commit and at least 1
-// draw with frame 0.
-class LayerTreeHostTestSetNeedsCommit1 : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSetNeedsCommit1() : num_commits_(0), num_draws_(0) {}
-
-  void BeginTest() override {
-    PostSetNeedsCommitToMainThread();
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    num_draws_++;
-    if (!impl->active_tree()->source_frame_number())
-      EndTest();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    num_commits_++;
-  }
-
-  void AfterTest() override {
-    EXPECT_LE(1, num_commits_);
-    EXPECT_LE(1, num_draws_);
-  }
-
- private:
-  int num_commits_;
-  int num_draws_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestSetNeedsCommit1);
-
-// A SetNeedsCommit should lead to 1 commit. Issuing a second commit after that
-// first committed frame draws should lead to another commit.
-class LayerTreeHostTestSetNeedsCommit2 : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSetNeedsCommit2() : num_commits_(0), num_draws_(0) {}
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override { ++num_draws_; }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    ++num_commits_;
-    switch (num_commits_) {
-      case 1:
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 2:
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-    }
-  }
-
-  void AfterTest() override {
-    EXPECT_EQ(2, num_commits_);
-    EXPECT_LE(1, num_draws_);
-  }
-
- private:
-  int num_commits_;
-  int num_draws_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestSetNeedsCommit2);
-
-// Verify that we pass property values in PushPropertiesTo.
-class LayerTreeHostTestPushPropertiesTo : public LayerTreeHostTest {
- protected:
-  void SetupTree() override {
-    scoped_refptr<Layer> root = Layer::Create();
-    root->CreateRenderSurface();
-    root->SetBounds(gfx::Size(10, 10));
-    layer_tree_host()->SetRootLayer(root);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  enum Properties {
-    STARTUP,
-    BOUNDS,
-    HIDE_LAYER_AND_SUBTREE,
-    DRAWS_CONTENT,
-    DONE,
-  };
-
-  void BeginTest() override {
-    index_ = STARTUP;
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    VerifyAfterValues(impl->active_tree()->root_layer());
-  }
-
-  void DidCommitAndDrawFrame() override {
-    SetBeforeValues(layer_tree_host()->root_layer());
-    VerifyBeforeValues(layer_tree_host()->root_layer());
-
-    ++index_;
-    if (index_ == DONE) {
-      EndTest();
-      return;
-    }
-
-    SetAfterValues(layer_tree_host()->root_layer());
-  }
-
-  void AfterTest() override {}
-
-  void VerifyBeforeValues(Layer* layer) {
-    EXPECT_EQ(gfx::Size(10, 10).ToString(), layer->bounds().ToString());
-    EXPECT_FALSE(layer->hide_layer_and_subtree());
-    EXPECT_FALSE(layer->DrawsContent());
-  }
-
-  void SetBeforeValues(Layer* layer) {
-    layer->SetBounds(gfx::Size(10, 10));
-    layer->SetHideLayerAndSubtree(false);
-    layer->SetIsDrawable(false);
-  }
-
-  void VerifyAfterValues(LayerImpl* layer) {
-    switch (static_cast<Properties>(index_)) {
-      case STARTUP:
-      case DONE:
-        break;
-      case BOUNDS:
-        EXPECT_EQ(gfx::Size(20, 20).ToString(), layer->bounds().ToString());
-        break;
-      case HIDE_LAYER_AND_SUBTREE:
-        EXPECT_TRUE(layer->hide_layer_and_subtree());
-        break;
-      case DRAWS_CONTENT:
-        EXPECT_TRUE(layer->DrawsContent());
-        break;
-    }
-  }
-
-  void SetAfterValues(Layer* layer) {
-    switch (static_cast<Properties>(index_)) {
-      case STARTUP:
-      case DONE:
-        break;
-      case BOUNDS:
-        layer->SetBounds(gfx::Size(20, 20));
-        break;
-      case HIDE_LAYER_AND_SUBTREE:
-        layer->SetHideLayerAndSubtree(true);
-        break;
-      case DRAWS_CONTENT:
-        layer->SetIsDrawable(true);
-        break;
-    }
-  }
-
-  int index_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestPushPropertiesTo);
-
-// 1 setNeedsRedraw after the first commit has completed should lead to 1
-// additional draw.
-class LayerTreeHostTestSetNeedsRedraw : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSetNeedsRedraw() : num_commits_(0), num_draws_(0) {}
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    EXPECT_EQ(0, impl->active_tree()->source_frame_number());
-    if (!num_draws_) {
-      // Redraw again to verify that the second redraw doesn't commit.
-      PostSetNeedsRedrawToMainThread();
-    } else {
-      EndTest();
-    }
-    num_draws_++;
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    EXPECT_EQ(0, num_draws_);
-    num_commits_++;
-  }
-
-  void AfterTest() override {
-    EXPECT_GE(2, num_draws_);
-    EXPECT_EQ(1, num_commits_);
-  }
-
- private:
-  int num_commits_;
-  int num_draws_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestSetNeedsRedraw);
-
-// After setNeedsRedrawRect(invalid_rect) the final damage_rect
-// must contain invalid_rect.
-class LayerTreeHostTestSetNeedsRedrawRect : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSetNeedsRedrawRect()
-      : num_draws_(0), bounds_(50, 50), invalid_rect_(10, 10, 20, 20) {}
-
-  void BeginTest() override {
-    if (layer_tree_host()->settings().impl_side_painting)
-      root_layer_ = FakePictureLayer::Create(&client_);
-    else
-      root_layer_ = ContentLayer::Create(&client_);
-    root_layer_->SetIsDrawable(true);
-    root_layer_->SetBounds(bounds_);
-    layer_tree_host()->SetRootLayer(root_layer_);
-    layer_tree_host()->SetViewportSize(bounds_);
-    PostSetNeedsCommitToMainThread();
-  }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    EXPECT_EQ(DRAW_SUCCESS, draw_result);
-
-    gfx::RectF root_damage_rect;
-    if (!frame_data->render_passes.empty())
-      root_damage_rect = frame_data->render_passes.back()->damage_rect;
-
-    if (!num_draws_) {
-      // If this is the first frame, expect full frame damage.
-      EXPECT_EQ(root_damage_rect, gfx::Rect(bounds_));
-    } else {
-      // Check that invalid_rect_ is indeed repainted.
-      EXPECT_TRUE(root_damage_rect.Contains(invalid_rect_));
-    }
-
-    return draw_result;
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    if (!num_draws_) {
-      PostSetNeedsRedrawRectToMainThread(invalid_rect_);
-    } else {
-      EndTest();
-    }
-    num_draws_++;
-  }
-
-  void AfterTest() override { EXPECT_EQ(2, num_draws_); }
-
- private:
-  int num_draws_;
-  const gfx::Size bounds_;
-  const gfx::Rect invalid_rect_;
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> root_layer_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestSetNeedsRedrawRect);
-
-// Ensure the texture size of the pending and active trees are identical when a
-// layer is not in the viewport and a resize happens on the viewport
-class LayerTreeHostTestGpuRasterDeviceSizeChanged : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestGpuRasterDeviceSizeChanged()
-      : num_draws_(0), bounds_(500, 64), invalid_rect_(10, 10, 20, 20) {}
-
-  void BeginTest() override {
-    client_.set_fill_with_nonsolid_color(true);
-    root_layer_ = FakePictureLayer::Create(&client_);
-    root_layer_->SetIsDrawable(true);
-    gfx::Transform transform;
-    // Translate the layer out of the viewport to force it to not update its
-    // tile size via PushProperties.
-    transform.Translate(10000.0, 10000.0);
-    root_layer_->SetTransform(transform);
-    root_layer_->SetBounds(bounds_);
-    layer_tree_host()->SetRootLayer(root_layer_);
-    layer_tree_host()->SetViewportSize(bounds_);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->gpu_rasterization_enabled = true;
-    settings->gpu_rasterization_forced = true;
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    // Perform 2 commits.
-    if (!num_draws_) {
-      PostSetNeedsRedrawRectToMainThread(invalid_rect_);
-    } else {
-      EndTest();
-    }
-    num_draws_++;
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    if (num_draws_ == 2) {
-      auto pending_tree = host_impl->pending_tree();
-      auto pending_layer_impl =
-          static_cast<FakePictureLayerImpl*>(pending_tree->root_layer());
-      EXPECT_NE(pending_layer_impl, nullptr);
-
-      auto active_tree = host_impl->pending_tree();
-      auto active_layer_impl =
-          static_cast<FakePictureLayerImpl*>(active_tree->root_layer());
-      EXPECT_NE(pending_layer_impl, nullptr);
-
-      auto active_tiling_set = active_layer_impl->picture_layer_tiling_set();
-      auto active_tiling = active_tiling_set->tiling_at(0);
-      auto pending_tiling_set = pending_layer_impl->picture_layer_tiling_set();
-      auto pending_tiling = pending_tiling_set->tiling_at(0);
-      EXPECT_EQ(
-          pending_tiling->TilingDataForTesting().max_texture_size().width(),
-          active_tiling->TilingDataForTesting().max_texture_size().width());
-    }
-  }
-
-  void DidCommitAndDrawFrame() override {
-    // On the second commit, resize the viewport.
-    if (num_draws_ == 1) {
-      layer_tree_host()->SetViewportSize(gfx::Size(400, 64));
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  int num_draws_;
-  const gfx::Size bounds_;
-  const gfx::Rect invalid_rect_;
-  FakeContentLayerClient client_;
-  scoped_refptr<FakePictureLayer> root_layer_;
-};
-
-SINGLE_AND_MULTI_THREAD_IMPL_TEST_F(
-    LayerTreeHostTestGpuRasterDeviceSizeChanged);
-
-class LayerTreeHostTestNoExtraCommitFromInvalidate : public LayerTreeHostTest {
- public:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->layer_transforms_should_scale_layer_contents = true;
-  }
-
-  void SetupTree() override {
-    root_layer_ = Layer::Create();
-    root_layer_->SetBounds(gfx::Size(10, 20));
-    root_layer_->CreateRenderSurface();
-
-    if (layer_tree_host()->settings().impl_side_painting)
-      scaled_layer_ = FakePictureLayer::Create(&client_);
-    else
-      scaled_layer_ = FakeContentLayer::Create(&client_);
-    scaled_layer_->SetBounds(gfx::Size(1, 1));
-    root_layer_->AddChild(scaled_layer_);
-
-    layer_tree_host()->SetRootLayer(root_layer_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    if (host_impl->active_tree()->source_frame_number() == 1)
-      EndTest();
-  }
-
-  void DidCommit() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        // SetBounds grows the layer and exposes new content.
-        if (layer_tree_host()->settings().impl_side_painting) {
-          scaled_layer_->SetBounds(gfx::Size(4, 4));
-        } else {
-          // Changing the device scale factor causes a commit. It also changes
-          // the content bounds of |scaled_layer_|, which should not generate
-          // a second commit as a result.
-          layer_tree_host()->SetDeviceScaleFactor(4.f);
-        }
-        break;
-      default:
-        // No extra commits.
-        EXPECT_EQ(2, layer_tree_host()->source_frame_number());
-    }
-  }
-
-  void AfterTest() override {
-    EXPECT_EQ(gfx::Size(4, 4).ToString(),
-              scaled_layer_->content_bounds().ToString());
-  }
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> root_layer_;
-  scoped_refptr<Layer> scaled_layer_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestNoExtraCommitFromInvalidate);
-
-class LayerTreeHostTestNoExtraCommitFromScrollbarInvalidate
-    : public LayerTreeHostTest {
- public:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->layer_transforms_should_scale_layer_contents = true;
-  }
-
-  void SetupTree() override {
-    root_layer_ = Layer::Create();
-    root_layer_->SetBounds(gfx::Size(10, 20));
-    root_layer_->CreateRenderSurface();
-
-    bool paint_scrollbar = true;
-    bool has_thumb = false;
-    scrollbar_ = FakePaintedScrollbarLayer::Create(
-        paint_scrollbar, has_thumb, root_layer_->id());
-    scrollbar_->SetPosition(gfx::Point(0, 10));
-    scrollbar_->SetBounds(gfx::Size(10, 10));
-
-    root_layer_->AddChild(scrollbar_);
-
-    layer_tree_host()->SetRootLayer(root_layer_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    if (host_impl->active_tree()->source_frame_number() == 1)
-      EndTest();
-  }
-
-  void DidCommit() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        // Changing the device scale factor causes a commit. It also changes
-        // the content bounds of |scrollbar_|, which should not generate
-        // a second commit as a result.
-        layer_tree_host()->SetDeviceScaleFactor(4.f);
-        break;
-      default:
-        // No extra commits.
-        EXPECT_EQ(2, layer_tree_host()->source_frame_number());
-    }
-  }
-
-  void AfterTest() override {
-    EXPECT_EQ(gfx::Size(40, 40).ToString(),
-              scrollbar_->internal_content_bounds().ToString());
-  }
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> root_layer_;
-  scoped_refptr<FakePaintedScrollbarLayer> scrollbar_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(
-    LayerTreeHostTestNoExtraCommitFromScrollbarInvalidate);
-
-class LayerTreeHostTestSetNextCommitForcesRedraw : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSetNextCommitForcesRedraw()
-      : num_draws_(0), bounds_(50, 50), invalid_rect_(10, 10, 20, 20) {}
-
-  void BeginTest() override {
-    if (layer_tree_host()->settings().impl_side_painting)
-      root_layer_ = FakePictureLayer::Create(&client_);
-    else
-      root_layer_ = ContentLayer::Create(&client_);
-    root_layer_->SetIsDrawable(true);
-    root_layer_->SetBounds(bounds_);
-    layer_tree_host()->SetRootLayer(root_layer_);
-    layer_tree_host()->SetViewportSize(bounds_);
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    if (num_draws_ == 3 && host_impl->settings().impl_side_painting)
-      host_impl->SetNeedsRedrawRect(invalid_rect_);
-  }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    EXPECT_EQ(DRAW_SUCCESS, draw_result);
-
-    gfx::RectF root_damage_rect;
-    if (!frame_data->render_passes.empty())
-      root_damage_rect = frame_data->render_passes.back()->damage_rect;
-
-    switch (num_draws_) {
-      case 0:
-        EXPECT_EQ(gfx::Rect(bounds_), root_damage_rect);
-        break;
-      case 1:
-      case 2:
-        EXPECT_EQ(gfx::Rect(0, 0, 0, 0), root_damage_rect);
-        break;
-      case 3:
-        EXPECT_EQ(invalid_rect_, root_damage_rect);
-        break;
-      case 4:
-        EXPECT_EQ(gfx::Rect(bounds_), root_damage_rect);
-        break;
-      default:
-        NOTREACHED();
-    }
-
-    return draw_result;
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    switch (num_draws_) {
-      case 0:
-      case 1:
-        // Cycle through a couple of empty commits to ensure we're observing the
-        // right behavior
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 2:
-        // Should force full frame damage on the next commit
-        PostSetNextCommitForcesRedrawToMainThread();
-        PostSetNeedsCommitToMainThread();
-        if (host_impl->settings().impl_side_painting)
-          host_impl->BlockNotifyReadyToActivateForTesting(true);
-        else
-          num_draws_++;
-        break;
-      case 3:
-        host_impl->BlockNotifyReadyToActivateForTesting(false);
-        break;
-      default:
-        EndTest();
-        break;
-    }
-    num_draws_++;
-  }
-
-  void AfterTest() override { EXPECT_EQ(5, num_draws_); }
-
- private:
-  int num_draws_;
-  const gfx::Size bounds_;
-  const gfx::Rect invalid_rect_;
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> root_layer_;
-};
-
-SINGLE_AND_MULTI_THREAD_BLOCKNOTIFY_TEST_F(
-    LayerTreeHostTestSetNextCommitForcesRedraw);
-
-// Tests that if a layer is not drawn because of some reason in the parent then
-// its damage is preserved until the next time it is drawn.
-class LayerTreeHostTestUndrawnLayersDamageLater : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestUndrawnLayersDamageLater() {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    // If we don't set the minimum contents scale, it's harder to verify whether
-    // the damage we get is correct. For other scale amounts, please see
-    // LayerTreeHostTestDamageWithScale.
-    settings->minimum_contents_scale = 1.f;
-  }
-
-  void SetupTree() override {
-    if (layer_tree_host()->settings().impl_side_painting)
-      root_layer_ = FakePictureLayer::Create(&client_);
-    else
-      root_layer_ = ContentLayer::Create(&client_);
-    root_layer_->SetIsDrawable(true);
-    root_layer_->SetBounds(gfx::Size(50, 50));
-    layer_tree_host()->SetRootLayer(root_layer_);
-
-    // The initially transparent layer has a larger child layer, which is
-    // not initially drawn because of the this (parent) layer.
-    if (layer_tree_host()->settings().impl_side_painting)
-      parent_layer_ = FakePictureLayer::Create(&client_);
-    else
-      parent_layer_ = FakeContentLayer::Create(&client_);
-    parent_layer_->SetBounds(gfx::Size(15, 15));
-    parent_layer_->SetOpacity(0.0f);
-    root_layer_->AddChild(parent_layer_);
-
-    if (layer_tree_host()->settings().impl_side_painting)
-      child_layer_ = FakePictureLayer::Create(&client_);
-    else
-      child_layer_ = FakeContentLayer::Create(&client_);
-    child_layer_->SetBounds(gfx::Size(25, 25));
-    parent_layer_->AddChild(child_layer_);
-
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    EXPECT_EQ(DRAW_SUCCESS, draw_result);
-
-    gfx::RectF root_damage_rect;
-    if (!frame_data->render_passes.empty())
-      root_damage_rect = frame_data->render_passes.back()->damage_rect;
-
-    // The first time, the whole view needs be drawn.
-    // Afterwards, just the opacity of surface_layer1 is changed a few times,
-    // and each damage should be the bounding box of it and its child. If this
-    // was working improperly, the damage might not include its childs bounding
-    // box.
-    switch (host_impl->active_tree()->source_frame_number()) {
-      case 0:
-        EXPECT_EQ(gfx::Rect(root_layer_->bounds()), root_damage_rect);
-        break;
-      case 1:
-      case 2:
-      case 3:
-        EXPECT_EQ(gfx::Rect(child_layer_->bounds()), root_damage_rect);
-        break;
-      default:
-        NOTREACHED();
-    }
-
-    return draw_result;
-  }
-
-  void DidCommitAndDrawFrame() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        // Test not owning the surface.
-        parent_layer_->SetOpacity(1.0f);
-        break;
-      case 2:
-        parent_layer_->SetOpacity(0.0f);
-        break;
-      case 3:
-        // Test owning the surface.
-        parent_layer_->SetOpacity(0.5f);
-        parent_layer_->SetForceRenderSurface(true);
-        break;
-      case 4:
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> root_layer_;
-  scoped_refptr<Layer> parent_layer_;
-  scoped_refptr<Layer> child_layer_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestUndrawnLayersDamageLater);
-
-// Tests that if a layer is not drawn because of some reason in the parent then
-// its damage is preserved until the next time it is drawn.
-class LayerTreeHostTestDamageWithScale : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestDamageWithScale() {}
-
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-
-    scoped_ptr<FakePicturePile> pile(
-        new FakePicturePile(ImplSidePaintingSettings().minimum_contents_scale,
-                            ImplSidePaintingSettings().default_tile_grid_size));
-    root_layer_ =
-        FakePictureLayer::CreateWithRecordingSource(&client_, pile.Pass());
-    root_layer_->SetBounds(gfx::Size(50, 50));
-
-    pile.reset(
-        new FakePicturePile(ImplSidePaintingSettings().minimum_contents_scale,
-                            ImplSidePaintingSettings().default_tile_grid_size));
-    child_layer_ =
-        FakePictureLayer::CreateWithRecordingSource(&client_, pile.Pass());
-    child_layer_->SetBounds(gfx::Size(25, 25));
-    child_layer_->SetIsDrawable(true);
-    child_layer_->SetContentsOpaque(true);
-    root_layer_->AddChild(child_layer_);
-
-    layer_tree_host()->SetRootLayer(root_layer_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    // Force the layer to have a tiling at 1.3f scale. Note that if we simply
-    // add tiling, it will be gone by the time we draw because of aggressive
-    // cleanup. AddTilingUntilNextDraw ensures that it remains there during
-    // damage calculation.
-    FakePictureLayerImpl* child_layer_impl = static_cast<FakePictureLayerImpl*>(
-        host_impl->active_tree()->LayerById(child_layer_->id()));
-    child_layer_impl->AddTilingUntilNextDraw(1.3f);
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    EXPECT_EQ(DRAW_SUCCESS, draw_result);
-
-    gfx::RectF root_damage_rect;
-    if (!frame_data->render_passes.empty())
-      root_damage_rect = frame_data->render_passes.back()->damage_rect;
-
-    // The first time, the whole view needs be drawn.
-    // Afterwards, just the opacity of surface_layer1 is changed a few times,
-    // and each damage should be the bounding box of it and its child. If this
-    // was working improperly, the damage might not include its childs bounding
-    // box.
-    switch (host_impl->active_tree()->source_frame_number()) {
-      case 0:
-        EXPECT_EQ(gfx::Rect(root_layer_->bounds()), root_damage_rect);
-        break;
-      case 1: {
-        FakePictureLayerImpl* child_layer_impl =
-            static_cast<FakePictureLayerImpl*>(
-                host_impl->active_tree()->LayerById(child_layer_->id()));
-        // We remove tilings pretty aggressively if they are not ideal. Add this
-        // back in so that we can compare
-        // child_layer_impl->GetEnclosingRectInTargetSpace to the damage.
-        child_layer_impl->AddTilingUntilNextDraw(1.3f);
-
-        EXPECT_EQ(gfx::Rect(26, 26), root_damage_rect);
-        EXPECT_EQ(child_layer_impl->GetEnclosingRectInTargetSpace(),
-                  root_damage_rect);
-        EXPECT_TRUE(child_layer_impl->GetEnclosingRectInTargetSpace().Contains(
-            gfx::Rect(child_layer_->bounds())));
-        break;
-      }
-      default:
-        NOTREACHED();
-    }
-
-    return draw_result;
-  }
-
-  void DidCommitAndDrawFrame() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1: {
-        // Test not owning the surface.
-        child_layer_->SetOpacity(0.5f);
-        break;
-      }
-      case 2:
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> root_layer_;
-  scoped_refptr<Layer> child_layer_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestDamageWithScale);
-
-// Tests that if a layer is not drawn because of some reason in the parent,
-// causing its content bounds to not be computed, then when it is later drawn,
-// its content bounds get pushed.
-class LayerTreeHostTestUndrawnLayersPushContentBoundsLater
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestUndrawnLayersPushContentBoundsLater()
-      : root_layer_(Layer::Create()) {}
-
-  void SetupTree() override {
-    root_layer_->CreateRenderSurface();
-    root_layer_->SetIsDrawable(true);
-    root_layer_->SetBounds(gfx::Size(20, 20));
-    layer_tree_host()->SetRootLayer(root_layer_);
-
-    parent_layer_ = Layer::Create();
-    parent_layer_->SetBounds(gfx::Size(20, 20));
-    parent_layer_->SetOpacity(0.0f);
-    root_layer_->AddChild(parent_layer_);
-
-    child_layer_ = Layer::Create();
-    child_layer_->SetBounds(gfx::Size(15, 15));
-    parent_layer_->AddChild(child_layer_);
-
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    LayerImpl* root = host_impl->active_tree()->root_layer();
-    LayerImpl* parent = root->children()[0];
-    LayerImpl* child = parent->children()[0];
-
-    switch (host_impl->active_tree()->source_frame_number()) {
-      case 0:
-        EXPECT_EQ(0.f, parent->opacity());
-        EXPECT_EQ(gfx::SizeF(), child->content_bounds());
-        break;
-      case 1:
-        EXPECT_EQ(1.f, parent->opacity());
-        EXPECT_EQ(gfx::SizeF(15.f, 15.f), child->content_bounds());
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-    }
-  }
-
-  void DidCommit() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        parent_layer_->SetOpacity(1.0f);
-        break;
-      case 2:
-        break;
-      default:
-        NOTREACHED();
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  scoped_refptr<Layer> root_layer_;
-  scoped_refptr<Layer> parent_layer_;
-  scoped_refptr<Layer> child_layer_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(
-    LayerTreeHostTestUndrawnLayersPushContentBoundsLater);
-
-// This test verifies that properties on the layer tree host are commited
-// to the impl side.
-class LayerTreeHostTestCommit : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestCommit() {}
-
-  void BeginTest() override {
-    layer_tree_host()->SetViewportSize(gfx::Size(20, 20));
-    layer_tree_host()->set_background_color(SK_ColorGRAY);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    EXPECT_EQ(gfx::Size(20, 20), impl->DrawViewportSize());
-    EXPECT_EQ(SK_ColorGRAY, impl->active_tree()->background_color());
-
-    EndTest();
-  }
-
-  void AfterTest() override {}
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestCommit);
-
-// This test verifies that LayerTreeHostImpl's current frame time gets
-// updated in consecutive frames when it doesn't draw due to tree
-// activation failure.
-class LayerTreeHostTestFrameTimeUpdatesAfterActivationFails
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestFrameTimeUpdatesAfterActivationFails()
-      : frame_count_with_pending_tree_(0) {}
-
-  void BeginTest() override {
-    layer_tree_host()->SetViewportSize(gfx::Size(20, 20));
-    layer_tree_host()->set_background_color(SK_ColorGRAY);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void BeginCommitOnThread(LayerTreeHostImpl* impl) override {
-    EXPECT_EQ(frame_count_with_pending_tree_, 0);
-    if (impl->settings().impl_side_painting)
-      impl->BlockNotifyReadyToActivateForTesting(true);
-  }
-
-  void WillBeginImplFrameOnThread(LayerTreeHostImpl* impl,
-                                  const BeginFrameArgs& args) override {
-    if (impl->pending_tree())
-      frame_count_with_pending_tree_++;
-
-    if (frame_count_with_pending_tree_ == 1) {
-      EXPECT_EQ(first_frame_time_.ToInternalValue(), 0);
-      first_frame_time_ = impl->CurrentBeginFrameArgs().frame_time;
-    } else if (frame_count_with_pending_tree_ == 2 &&
-               impl->settings().impl_side_painting) {
-      impl->BlockNotifyReadyToActivateForTesting(false);
-    }
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    if (frame_count_with_pending_tree_ > 1) {
-      EXPECT_NE(first_frame_time_.ToInternalValue(), 0);
-      EXPECT_NE(first_frame_time_.ToInternalValue(),
-                impl->CurrentBeginFrameArgs().frame_time.ToInternalValue());
-      EndTest();
-      return;
-    }
-
-    EXPECT_FALSE(impl->settings().impl_side_painting);
-    EndTest();
-  }
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    if (impl->settings().impl_side_painting)
-      EXPECT_NE(frame_count_with_pending_tree_, 1);
-  }
-
-  void AfterTest() override {}
-
- private:
-  int frame_count_with_pending_tree_;
-  base::TimeTicks first_frame_time_;
-};
-
-SINGLE_AND_MULTI_THREAD_BLOCKNOTIFY_TEST_F(
-    LayerTreeHostTestFrameTimeUpdatesAfterActivationFails);
-
-// This test verifies that LayerTreeHostImpl's current frame time gets
-// updated in consecutive frames when it draws in each frame.
-class LayerTreeHostTestFrameTimeUpdatesAfterDraw : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestFrameTimeUpdatesAfterDraw() : frame_(0) {}
-
-  void BeginTest() override {
-    layer_tree_host()->SetViewportSize(gfx::Size(20, 20));
-    layer_tree_host()->set_background_color(SK_ColorGRAY);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    frame_++;
-    if (frame_ == 1) {
-      first_frame_time_ = impl->CurrentBeginFrameArgs().frame_time;
-      impl->SetNeedsRedraw();
-
-      // Since we might use a low-resolution clock on Windows, we need to
-      // make sure that the clock has incremented past first_frame_time_.
-      while (first_frame_time_ == gfx::FrameTime::Now()) {
-      }
-
-      return;
-    }
-
-    EXPECT_NE(first_frame_time_, impl->CurrentBeginFrameArgs().frame_time);
-    EndTest();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    // Ensure there isn't a commit between the two draws, to ensure that a
-    // commit isn't required for updating the current frame time. We can
-    // only check for this in the multi-threaded case, since in the single-
-    // threaded case there will always be a commit between consecutive draws.
-    if (HasImplThread())
-      EXPECT_EQ(0, frame_);
-  }
-
-  void AfterTest() override {}
-
- private:
-  int frame_;
-  base::TimeTicks first_frame_time_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestFrameTimeUpdatesAfterDraw);
-
-// Verifies that StartPageScaleAnimation events propagate correctly
-// from LayerTreeHost to LayerTreeHostImpl in the MT compositor.
-class LayerTreeHostTestStartPageScaleAnimation : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestStartPageScaleAnimation() {}
-
-  void SetupTree() override {
-    LayerTreeHostTest::SetupTree();
-
-    if (layer_tree_host()->settings().impl_side_painting) {
-      scoped_refptr<FakePictureLayer> layer =
-          FakePictureLayer::Create(&client_);
-      layer->set_always_update_resources(true);
-      scroll_layer_ = layer;
-    } else {
-      scroll_layer_ = FakeContentLayer::Create(&client_);
-    }
-
-    Layer* root_layer = layer_tree_host()->root_layer();
-    scroll_layer_->SetScrollClipLayerId(root_layer->id());
-    scroll_layer_->SetIsContainerForFixedPositionLayers(true);
-    scroll_layer_->SetBounds(gfx::Size(2 * root_layer->bounds().width(),
-                                       2 * root_layer->bounds().height()));
-    scroll_layer_->SetScrollOffset(gfx::ScrollOffset());
-    layer_tree_host()->root_layer()->AddChild(scroll_layer_);
-    // This test requires the page_scale and inner viewport layers to be
-    // identified.
-    layer_tree_host()->RegisterViewportLayers(NULL, root_layer,
-                                              scroll_layer_.get(), NULL);
-    layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.5f, 2.f);
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
-                           float scale,
-                           float) override {
-    gfx::ScrollOffset offset = scroll_layer_->scroll_offset();
-    scroll_layer_->SetScrollOffset(ScrollOffsetWithDelta(offset,
-                                                         scroll_delta));
-    layer_tree_host()->SetPageScaleFactorAndLimits(scale, 0.5f, 2.f);
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    // We get one commit before the first draw, and the animation doesn't happen
-    // until the second draw.
-    switch (impl->active_tree()->source_frame_number()) {
-      case 0:
-        EXPECT_EQ(1.f, impl->active_tree()->current_page_scale_factor());
-        // We'll start an animation when we get back to the main thread.
-        break;
-      case 1:
-        EXPECT_EQ(1.f, impl->active_tree()->current_page_scale_factor());
-        break;
-      case 2:
-        EXPECT_EQ(1.25f, impl->active_tree()->current_page_scale_factor());
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-    }
-  }
-
-  void DidCommitAndDrawFrame() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        layer_tree_host()->StartPageScaleAnimation(
-            gfx::Vector2d(), false, 1.25f, base::TimeDelta());
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> scroll_layer_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestStartPageScaleAnimation);
-
-class LayerTreeHostTestSetVisible : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSetVisible() : num_draws_(0) {}
-
-  void BeginTest() override {
-    PostSetNeedsCommitToMainThread();
-    PostSetVisibleToMainThread(false);
-    // This is suppressed while we're invisible.
-    PostSetNeedsRedrawToMainThread();
-    // Triggers the redraw.
-    PostSetVisibleToMainThread(true);
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    EXPECT_TRUE(impl->visible());
-    ++num_draws_;
-    EndTest();
-  }
-
-  void AfterTest() override { EXPECT_EQ(1, num_draws_); }
-
- private:
-  int num_draws_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestSetVisible);
-
-class TestOpacityChangeLayerDelegate : public ContentLayerClient {
- public:
-  TestOpacityChangeLayerDelegate() : test_layer_(0) {}
-
-  void SetTestLayer(Layer* test_layer) { test_layer_ = test_layer; }
-
-  void PaintContents(SkCanvas* canvas,
-                     const gfx::Rect& clip,
-                     PaintingControlSetting picture_control) override {
-    // Set layer opacity to 0.
-    if (test_layer_)
-      test_layer_->SetOpacity(0.f);
-  }
-  scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
-      const gfx::Rect& clip,
-      PaintingControlSetting picture_control) override {
-    NOTIMPLEMENTED();
-    return DisplayItemList::Create();
-  }
-  bool FillsBoundsCompletely() const override { return false; }
-
- private:
-  Layer* test_layer_;
-};
-
-class ContentLayerWithUpdateTracking : public ContentLayer {
- public:
-  static scoped_refptr<ContentLayerWithUpdateTracking> Create(
-      ContentLayerClient* client) {
-    return make_scoped_refptr(new ContentLayerWithUpdateTracking(client));
-  }
-
-  int PaintContentsCount() { return paint_contents_count_; }
-  void ResetPaintContentsCount() { paint_contents_count_ = 0; }
-
-  bool Update(ResourceUpdateQueue* queue,
-              const OcclusionTracker<Layer>* occlusion) override {
-    bool updated = ContentLayer::Update(queue, occlusion);
-    paint_contents_count_++;
-    return updated;
-  }
-
- private:
-  explicit ContentLayerWithUpdateTracking(ContentLayerClient* client)
-      : ContentLayer(client), paint_contents_count_(0) {
-    SetBounds(gfx::Size(10, 10));
-    SetIsDrawable(true);
-  }
-  ~ContentLayerWithUpdateTracking() override {}
-
-  int paint_contents_count_;
-};
-
-// Layer opacity change during paint should not prevent compositor resources
-// from being updated during commit.
-class LayerTreeHostTestOpacityChange : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestOpacityChange() : test_opacity_change_delegate_() {}
-
-  void BeginTest() override {
-    if (layer_tree_host()->settings().impl_side_painting) {
-      update_check_picture_layer_ =
-          FakePictureLayer::Create(&test_opacity_change_delegate_);
-      test_opacity_change_delegate_.SetTestLayer(
-          update_check_picture_layer_.get());
-      is_impl_paint_ = true;
-    } else {
-      update_check_content_layer_ = ContentLayerWithUpdateTracking::Create(
-          &test_opacity_change_delegate_);
-      test_opacity_change_delegate_.SetTestLayer(
-          update_check_content_layer_.get());
-      is_impl_paint_ = false;
-    }
-    layer_tree_host()->SetViewportSize(gfx::Size(10, 10));
-    if (layer_tree_host()->settings().impl_side_painting)
-      layer_tree_host()->root_layer()->AddChild(update_check_picture_layer_);
-    else
-      layer_tree_host()->root_layer()->AddChild(update_check_content_layer_);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override { EndTest(); }
-
-  void AfterTest() override {
-    // Update() should have been called once.
-    if (is_impl_paint_)
-      EXPECT_EQ(1u, update_check_picture_layer_->update_count());
-    else
-      EXPECT_EQ(1, update_check_content_layer_->PaintContentsCount());
-  }
-
- private:
-  TestOpacityChangeLayerDelegate test_opacity_change_delegate_;
-  scoped_refptr<ContentLayerWithUpdateTracking> update_check_content_layer_;
-  scoped_refptr<FakePictureLayer> update_check_picture_layer_;
-  bool is_impl_paint_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestOpacityChange);
-
-class LayerTreeHostTestDeviceScaleFactorScalesViewportAndLayers
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestDeviceScaleFactorScalesViewportAndLayers() {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    // PictureLayer can only be used with impl side painting enabled.
-    settings->impl_side_painting = true;
-  }
-
-  void BeginTest() override {
-    client_.set_fill_with_nonsolid_color(true);
-    root_layer_ = FakePictureLayer::Create(&client_);
-    child_layer_ = FakePictureLayer::Create(&client_);
-
-    layer_tree_host()->SetViewportSize(gfx::Size(60, 60));
-    layer_tree_host()->SetDeviceScaleFactor(1.5);
-    EXPECT_EQ(gfx::Size(60, 60), layer_tree_host()->device_viewport_size());
-
-    root_layer_->AddChild(child_layer_);
-
-    root_layer_->SetIsDrawable(true);
-    root_layer_->SetBounds(gfx::Size(30, 30));
-
-    child_layer_->SetIsDrawable(true);
-    child_layer_->SetPosition(gfx::Point(2, 2));
-    child_layer_->SetBounds(gfx::Size(10, 10));
-
-    layer_tree_host()->SetRootLayer(root_layer_);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    // Should only do one commit.
-    EXPECT_EQ(0, impl->active_tree()->source_frame_number());
-    // Device scale factor should come over to impl.
-    EXPECT_NEAR(impl->device_scale_factor(), 1.5f, 0.00001f);
-
-    // Both layers are on impl.
-    ASSERT_EQ(1u, impl->active_tree()->root_layer()->children().size());
-
-    // Device viewport is scaled.
-    EXPECT_EQ(gfx::Size(60, 60), impl->DrawViewportSize());
-
-    FakePictureLayerImpl* root =
-        static_cast<FakePictureLayerImpl*>(impl->active_tree()->root_layer());
-    FakePictureLayerImpl* child = static_cast<FakePictureLayerImpl*>(
-        impl->active_tree()->root_layer()->children()[0]);
-
-    // Positions remain in layout pixels.
-    EXPECT_EQ(gfx::Point(0, 0), root->position());
-    EXPECT_EQ(gfx::Point(2, 2), child->position());
-
-    // Compute all the layer transforms for the frame.
-    LayerTreeHostImpl::FrameData frame_data;
-    impl->PrepareToDraw(&frame_data);
-    impl->DidDrawAllLayers(frame_data);
-
-    const LayerImplList& render_surface_layer_list =
-        *frame_data.render_surface_layer_list;
-
-    // Both layers should be drawing into the root render surface.
-    ASSERT_EQ(1u, render_surface_layer_list.size());
-    ASSERT_EQ(root->render_surface(),
-              render_surface_layer_list[0]->render_surface());
-    ASSERT_EQ(2u, root->render_surface()->layer_list().size());
-
-    // The root render surface is the size of the viewport.
-    EXPECT_EQ(gfx::Rect(0, 0, 60, 60), root->render_surface()->content_rect());
-
-    // The max tiling scale of the child should be scaled.
-    EXPECT_FLOAT_EQ(1.5f, child->MaximumTilingContentsScale());
-
-    gfx::Transform scale_transform;
-    scale_transform.Scale(impl->device_scale_factor(),
-                          impl->device_scale_factor());
-
-    // The root layer is scaled by 2x.
-    gfx::Transform root_screen_space_transform = scale_transform;
-    gfx::Transform root_draw_transform = scale_transform;
-
-    EXPECT_EQ(root_draw_transform, root->draw_transform());
-    EXPECT_EQ(root_screen_space_transform, root->screen_space_transform());
-
-    // The child is at position 2,2, which is transformed to 3,3 after the scale
-    gfx::Transform child_transform;
-    child_transform.Translate(3.f, 3.f);
-    child_transform.Scale(child->MaximumTilingContentsScale(),
-                          child->MaximumTilingContentsScale());
-
-    EXPECT_TRANSFORMATION_MATRIX_EQ(child_transform, child->draw_transform());
-    EXPECT_TRANSFORMATION_MATRIX_EQ(child_transform,
-                                    child->screen_space_transform());
-
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<FakePictureLayer> root_layer_;
-  scoped_refptr<FakePictureLayer> child_layer_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestDeviceScaleFactorScalesViewportAndLayers);
-
-// TODO(sohanjg) : Remove it once impl-side painting ships everywhere.
-// Verify atomicity of commits and reuse of textures.
-class LayerTreeHostTestDirectRendererAtomicCommit : public LayerTreeHostTest {
- public:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->renderer_settings.texture_id_allocation_chunk_size = 1;
-    // Make sure partial texture updates are turned off.
-    settings->max_partial_texture_updates = 0;
-    // Linear fade animator prevents scrollbars from drawing immediately.
-    settings->scrollbar_animator = LayerTreeSettings::NO_ANIMATOR;
-  }
-
-  void SetupTree() override {
-    layer_ = FakeContentLayer::Create(&client_);
-    layer_->SetBounds(gfx::Size(10, 20));
-
-    bool paint_scrollbar = true;
-    bool has_thumb = false;
-    scrollbar_ = FakePaintedScrollbarLayer::Create(
-        paint_scrollbar, has_thumb, layer_->id());
-    scrollbar_->SetPosition(gfx::Point(0, 10));
-    scrollbar_->SetBounds(gfx::Size(10, 10));
-
-    layer_->AddChild(scrollbar_);
-
-    layer_tree_host()->SetRootLayer(layer_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override {
-    drew_frame_ = -1;
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    ASSERT_EQ(0u, impl->settings().max_partial_texture_updates);
-
-    TestWebGraphicsContext3D* context = TestContext();
-
-    switch (impl->active_tree()->source_frame_number()) {
-      case 0:
-        // Number of textures should be one for each layer
-        ASSERT_EQ(2u, context->NumTextures());
-        // Number of textures used for commit should be one for each layer.
-        EXPECT_EQ(2u, context->NumUsedTextures());
-        // Verify that used texture is correct.
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(0)));
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(1)));
-
-        context->ResetUsedTextures();
-        break;
-      case 1:
-        // Number of textures should be one for scrollbar layer since it was
-        // requested and deleted on the impl-thread, and double for the content
-        // layer since its first texture is used by impl thread and cannot by
-        // used for update.
-        ASSERT_EQ(3u, context->NumTextures());
-        // Number of textures used for commit should be one for each layer.
-        EXPECT_EQ(2u, context->NumUsedTextures());
-        // First textures should not have been used.
-        EXPECT_FALSE(context->UsedTexture(context->TextureAt(0)));
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(1)));
-        // New textures should have been used.
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(2)));
-        context->ResetUsedTextures();
-        break;
-      case 2:
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    TestWebGraphicsContext3D* context = TestContext();
-
-    if (drew_frame_ == impl->active_tree()->source_frame_number()) {
-      EXPECT_EQ(0u, context->NumUsedTextures()) << "For frame " << drew_frame_;
-      return;
-    }
-    drew_frame_ = impl->active_tree()->source_frame_number();
-
-    // We draw/ship one texture each frame for each layer.
-    EXPECT_EQ(2u, context->NumUsedTextures());
-    context->ResetUsedTextures();
-
-    if (!TestEnded())
-      PostSetNeedsCommitToMainThread();
-  }
-
-  void Layout() override {
-    layer_->SetNeedsDisplay();
-    scrollbar_->SetNeedsDisplay();
-  }
-
-  void AfterTest() override {}
-
- protected:
-  FakeContentLayerClient client_;
-  scoped_refptr<FakeContentLayer> layer_;
-  scoped_refptr<FakePaintedScrollbarLayer> scrollbar_;
-  int drew_frame_;
-};
-
-MULTI_THREAD_DIRECT_RENDERER_NOIMPL_TEST_F(
-    LayerTreeHostTestDirectRendererAtomicCommit);
-
-// TODO(sohanjg) : Remove it once impl-side painting ships everywhere.
-class LayerTreeHostTestDelegatingRendererAtomicCommit
-    : public LayerTreeHostTestDirectRendererAtomicCommit {
- public:
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    ASSERT_EQ(0u, impl->settings().max_partial_texture_updates);
-
-    TestWebGraphicsContext3D* context = TestContext();
-
-    switch (impl->active_tree()->source_frame_number()) {
-      case 0:
-        // Number of textures should be one for each layer
-        ASSERT_EQ(2u, context->NumTextures());
-        // Number of textures used for commit should be one for each layer.
-        EXPECT_EQ(2u, context->NumUsedTextures());
-        // Verify that used texture is correct.
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(0)));
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(1)));
-        break;
-      case 1:
-        // Number of textures should be doubled as the first context layer
-        // texture is being used by the impl-thread and cannot be used for
-        // update.  The scrollbar behavior is different direct renderer because
-        // UI resource deletion with delegating renderer occurs after tree
-        // activation.
-        ASSERT_EQ(4u, context->NumTextures());
-        // Number of textures used for commit should still be
-        // one for each layer.
-        EXPECT_EQ(2u, context->NumUsedTextures());
-        // First textures should not have been used.
-        EXPECT_FALSE(context->UsedTexture(context->TextureAt(0)));
-        EXPECT_FALSE(context->UsedTexture(context->TextureAt(1)));
-        // New textures should have been used.
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(2)));
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(3)));
-        break;
-      case 2:
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-};
-
-MULTI_THREAD_DELEGATING_RENDERER_NOIMPL_TEST_F(
-    LayerTreeHostTestDelegatingRendererAtomicCommit);
-
-static void SetLayerPropertiesForTesting(Layer* layer,
-                                         Layer* parent,
-                                         const gfx::Transform& transform,
-                                         const gfx::Point3F& transform_origin,
-                                         const gfx::PointF& position,
-                                         const gfx::Size& bounds,
-                                         bool opaque) {
-  layer->RemoveAllChildren();
-  if (parent)
-    parent->AddChild(layer);
-  layer->SetTransform(transform);
-  layer->SetTransformOrigin(transform_origin);
-  layer->SetPosition(position);
-  layer->SetBounds(bounds);
-  layer->SetContentsOpaque(opaque);
-}
-
-// TODO(sohanjg) : Remove it once impl-side painting ships everywhere.
-class LayerTreeHostTestAtomicCommitWithPartialUpdate
-    : public LayerTreeHostTest {
- public:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->renderer_settings.texture_id_allocation_chunk_size = 1;
-    // Allow one partial texture update.
-    settings->max_partial_texture_updates = 1;
-    // No partial updates when impl side painting is enabled.
-    settings->impl_side_painting = false;
-  }
-
-  void SetupTree() override {
-    parent_ = FakeContentLayer::Create(&client_);
-    parent_->SetBounds(gfx::Size(10, 20));
-
-    child_ = FakeContentLayer::Create(&client_);
-    child_->SetPosition(gfx::Point(0, 10));
-    child_->SetBounds(gfx::Size(3, 10));
-
-    parent_->AddChild(child_);
-
-    layer_tree_host()->SetRootLayer(parent_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidCommitAndDrawFrame() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        parent_->SetNeedsDisplay();
-        child_->SetNeedsDisplay();
-        break;
-      case 2:
-        // Damage part of layers.
-        parent_->SetNeedsDisplayRect(gfx::Rect(5, 5));
-        child_->SetNeedsDisplayRect(gfx::Rect(5, 5));
-        break;
-      case 3:
-        child_->SetNeedsDisplay();
-        layer_tree_host()->SetViewportSize(gfx::Size(10, 10));
-        break;
-      case 4:
-        layer_tree_host()->SetViewportSize(gfx::Size(10, 20));
-        break;
-      case 5:
-        EndTest();
-        break;
-      default:
-        NOTREACHED() << layer_tree_host()->source_frame_number();
-        break;
-    }
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    ASSERT_EQ(1u, impl->settings().max_partial_texture_updates);
-
-    TestWebGraphicsContext3D* context = TestContext();
-
-    switch (impl->active_tree()->source_frame_number()) {
-      case 0:
-        // Number of textures should be one for each layer.
-        ASSERT_EQ(2u, context->NumTextures());
-        // Number of textures used for commit should be one for each layer.
-        EXPECT_EQ(2u, context->NumUsedTextures());
-        // Verify that used textures are correct.
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(0)));
-        EXPECT_TRUE(context->UsedTexture(context->TextureAt(1)));
-        context->ResetUsedTextures();
-        break;
-      case 1:
-        if (HasImplThread()) {
-          // Number of textures should be two for each content layer.
-          ASSERT_EQ(4u, context->NumTextures());
-        } else {
-          // In single thread we can always do partial updates, so the limit has
-          // no effect.
-          ASSERT_EQ(2u, context->NumTextures());
-        }
-        // Number of textures used for commit should be one for each content
-        // layer.
-        EXPECT_EQ(2u, context->NumUsedTextures());
-
-        if (HasImplThread()) {
-          // First content textures should not have been used.
-          EXPECT_FALSE(context->UsedTexture(context->TextureAt(0)));
-          EXPECT_FALSE(context->UsedTexture(context->TextureAt(1)));
-          // New textures should have been used.
-          EXPECT_TRUE(context->UsedTexture(context->TextureAt(2)));
-          EXPECT_TRUE(context->UsedTexture(context->TextureAt(3)));
-        } else {
-          // In single thread we can always do partial updates, so the limit has
-          // no effect.
-          EXPECT_TRUE(context->UsedTexture(context->TextureAt(0)));
-          EXPECT_TRUE(context->UsedTexture(context->TextureAt(1)));
-        }
-
-        context->ResetUsedTextures();
-        break;
-      case 2:
-        if (HasImplThread()) {
-          // Number of textures should be two for each content layer.
-          ASSERT_EQ(4u, context->NumTextures());
-        } else {
-          // In single thread we can always do partial updates, so the limit has
-          // no effect.
-          ASSERT_EQ(2u, context->NumTextures());
-        }
-        // Number of textures used for commit should be one for each content
-        // layer.
-        EXPECT_EQ(2u, context->NumUsedTextures());
-
-        if (HasImplThread()) {
-          // One content layer does a partial update also.
-          EXPECT_TRUE(context->UsedTexture(context->TextureAt(2)));
-          EXPECT_FALSE(context->UsedTexture(context->TextureAt(3)));
-        } else {
-          // In single thread we can always do partial updates, so the limit has
-          // no effect.
-          EXPECT_TRUE(context->UsedTexture(context->TextureAt(0)));
-          EXPECT_TRUE(context->UsedTexture(context->TextureAt(1)));
-        }
-
-        context->ResetUsedTextures();
-        break;
-      case 3:
-        // No textures should be used for commit.
-        EXPECT_EQ(0u, context->NumUsedTextures());
-
-        context->ResetUsedTextures();
-        break;
-      case 4:
-        // Number of textures used for commit should be one, for the
-        // content layer.
-        EXPECT_EQ(1u, context->NumUsedTextures());
-
-        context->ResetUsedTextures();
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    EXPECT_LT(impl->active_tree()->source_frame_number(), 5);
-
-    TestWebGraphicsContext3D* context = TestContext();
-
-    // Number of textures used for drawing should one per layer except for
-    // frame 3 where the viewport only contains one layer.
-    if (impl->active_tree()->source_frame_number() == 3) {
-      EXPECT_EQ(1u, context->NumUsedTextures());
-    } else {
-      EXPECT_EQ(2u, context->NumUsedTextures())
-          << "For frame " << impl->active_tree()->source_frame_number();
-    }
-
-    context->ResetUsedTextures();
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<FakeContentLayer> parent_;
-  scoped_refptr<FakeContentLayer> child_;
-};
-
-// Partial updates are not possible with a delegating renderer.
-SINGLE_AND_MULTI_THREAD_DIRECT_RENDERER_TEST_F(
-    LayerTreeHostTestAtomicCommitWithPartialUpdate);
-
-// TODO(sohanjg) : Make it work with impl-side painting.
-class LayerTreeHostTestSurfaceNotAllocatedForLayersOutsideMemoryLimit
-    : public LayerTreeHostTest {
- protected:
-  void SetupTree() override {
-    root_layer_ = FakeContentLayer::Create(&client_);
-    root_layer_->SetBounds(gfx::Size(100, 100));
-
-    surface_layer1_ = FakeContentLayer::Create(&client_);
-    surface_layer1_->SetBounds(gfx::Size(100, 100));
-    surface_layer1_->SetForceRenderSurface(true);
-    surface_layer1_->SetOpacity(0.5f);
-    root_layer_->AddChild(surface_layer1_);
-
-    surface_layer2_ = FakeContentLayer::Create(&client_);
-    surface_layer2_->SetBounds(gfx::Size(100, 100));
-    surface_layer2_->SetForceRenderSurface(true);
-    surface_layer2_->SetOpacity(0.5f);
-    surface_layer1_->AddChild(surface_layer2_);
-
-    replica_layer1_ = FakeContentLayer::Create(&client_);
-    surface_layer1_->SetReplicaLayer(replica_layer1_.get());
-
-    replica_layer2_ = FakeContentLayer::Create(&client_);
-    surface_layer2_->SetReplicaLayer(replica_layer2_.get());
-
-    layer_tree_host()->SetRootLayer(root_layer_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    Renderer* renderer = host_impl->renderer();
-    RenderPassId surface1_render_pass_id = host_impl->active_tree()
-                                               ->root_layer()
-                                               ->children()[0]
-                                               ->render_surface()
-                                               ->GetRenderPassId();
-    RenderPassId surface2_render_pass_id = host_impl->active_tree()
-                                               ->root_layer()
-                                               ->children()[0]
-                                               ->children()[0]
-                                               ->render_surface()
-                                               ->GetRenderPassId();
-
-    switch (host_impl->active_tree()->source_frame_number()) {
-      case 0:
-        EXPECT_TRUE(
-            renderer->HasAllocatedResourcesForTesting(surface1_render_pass_id));
-        EXPECT_TRUE(
-            renderer->HasAllocatedResourcesForTesting(surface2_render_pass_id));
-
-        // Reduce the memory limit to only fit the root layer and one render
-        // surface. This prevents any contents drawing into surfaces
-        // from being allocated.
-        host_impl->SetMemoryPolicy(ManagedMemoryPolicy(100 * 100 * 4 * 2));
-        break;
-      case 1:
-        EXPECT_FALSE(
-            renderer->HasAllocatedResourcesForTesting(surface1_render_pass_id));
-        EXPECT_FALSE(
-            renderer->HasAllocatedResourcesForTesting(surface2_render_pass_id));
-
-        EndTest();
-        break;
-    }
-  }
-
-  void DidCommitAndDrawFrame() override {
-    if (layer_tree_host()->source_frame_number() < 2)
-      root_layer_->SetNeedsDisplay();
-  }
-
-  void AfterTest() override {
-    EXPECT_LE(2u, root_layer_->update_count());
-    EXPECT_LE(2u, surface_layer1_->update_count());
-    EXPECT_LE(2u, surface_layer2_->update_count());
-  }
-
-  FakeContentLayerClient client_;
-  scoped_refptr<FakeContentLayer> root_layer_;
-  scoped_refptr<FakeContentLayer> surface_layer1_;
-  scoped_refptr<FakeContentLayer> replica_layer1_;
-  scoped_refptr<FakeContentLayer> surface_layer2_;
-  scoped_refptr<FakeContentLayer> replica_layer2_;
-};
-
-// Surfaces don't exist with a delegated renderer.
-SINGLE_AND_MULTI_THREAD_DIRECT_RENDERER_NOIMPL_TEST_F(
-    LayerTreeHostTestSurfaceNotAllocatedForLayersOutsideMemoryLimit);
-
-class EvictionTestLayer : public Layer {
- public:
-  static scoped_refptr<EvictionTestLayer> Create() {
-    return make_scoped_refptr(new EvictionTestLayer());
-  }
-
-  bool Update(ResourceUpdateQueue*, const OcclusionTracker<Layer>*) override;
-  bool DrawsContent() const override { return true; }
-
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
-  void PushPropertiesTo(LayerImpl* impl) override;
-  void SetTexturePriorities(const PriorityCalculator&) override;
-
-  bool HaveBackingTexture() const {
-    return texture_.get() ? texture_->have_backing_texture() : false;
-  }
-
- private:
-  EvictionTestLayer() : Layer() {}
-  ~EvictionTestLayer() override {}
-
-  void CreateTextureIfNeeded() {
-    if (texture_)
-      return;
-    texture_ = PrioritizedResource::Create(
-        layer_tree_host()->contents_texture_manager());
-    texture_->SetDimensions(gfx::Size(10, 10), RGBA_8888);
-    bitmap_.allocN32Pixels(10, 10);
-  }
-
-  scoped_ptr<PrioritizedResource> texture_;
-  SkBitmap bitmap_;
-};
-
-class EvictionTestLayerImpl : public LayerImpl {
- public:
-  static scoped_ptr<EvictionTestLayerImpl> Create(LayerTreeImpl* tree_impl,
-                                                  int id) {
-    return make_scoped_ptr(new EvictionTestLayerImpl(tree_impl, id));
-  }
-  ~EvictionTestLayerImpl() override {}
-
-  void AppendQuads(RenderPass* render_pass,
-                   AppendQuadsData* append_quads_data) override {
-    ASSERT_TRUE(has_texture_);
-    ASSERT_NE(0u, layer_tree_impl()->resource_provider()->num_resources());
-  }
-
-  void SetHasTexture(bool has_texture) { has_texture_ = has_texture; }
-
- private:
-  EvictionTestLayerImpl(LayerTreeImpl* tree_impl, int id)
-      : LayerImpl(tree_impl, id), has_texture_(false) {}
-
-  bool has_texture_;
-};
-
-void EvictionTestLayer::SetTexturePriorities(const PriorityCalculator&) {
-  CreateTextureIfNeeded();
-  if (!texture_)
-    return;
-  texture_->set_request_priority(PriorityCalculator::UIPriority(true));
-}
-
-bool EvictionTestLayer::Update(ResourceUpdateQueue* queue,
-                               const OcclusionTracker<Layer>* occlusion) {
-  CreateTextureIfNeeded();
-  if (!texture_)
-    return false;
-
-  gfx::Rect full_rect(0, 0, 10, 10);
-  ResourceUpdate upload = ResourceUpdate::Create(
-      texture_.get(), &bitmap_, full_rect, full_rect, gfx::Vector2d());
-  queue->AppendFullUpload(upload);
-  return true;
-}
-
-scoped_ptr<LayerImpl> EvictionTestLayer::CreateLayerImpl(
-    LayerTreeImpl* tree_impl) {
-  return EvictionTestLayerImpl::Create(tree_impl, layer_id_);
-}
-
-void EvictionTestLayer::PushPropertiesTo(LayerImpl* layer_impl) {
-  Layer::PushPropertiesTo(layer_impl);
-
-  EvictionTestLayerImpl* test_layer_impl =
-      static_cast<EvictionTestLayerImpl*>(layer_impl);
-  test_layer_impl->SetHasTexture(texture_->have_backing_texture());
-}
-
-class LayerTreeHostTestEvictTextures : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestEvictTextures()
-      : layer_(EvictionTestLayer::Create()),
-        impl_for_evict_textures_(0),
-        num_commits_(0) {}
-
-  void BeginTest() override {
-    layer_tree_host()->SetRootLayer(layer_);
-    layer_tree_host()->SetViewportSize(gfx::Size(10, 20));
-
-    gfx::Transform identity_matrix;
-    SetLayerPropertiesForTesting(layer_.get(),
-                                 0,
-                                 identity_matrix,
-                                 gfx::Point3F(0.f, 0.f, 0.f),
-                                 gfx::PointF(0.f, 0.f),
-                                 gfx::Size(10, 20),
-                                 true);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void PostEvictTextures() {
-    ImplThreadTaskRunner()->PostTask(
-        FROM_HERE,
-        base::Bind(&LayerTreeHostTestEvictTextures::EvictTexturesOnImplThread,
-                   base::Unretained(this)));
-  }
-
-  void EvictTexturesOnImplThread() {
-    DCHECK(impl_for_evict_textures_);
-    impl_for_evict_textures_->EvictTexturesForTesting();
-  }
-
-  // Commit 1: Just commit and draw normally, then post an eviction at the end
-  // that will trigger a commit.
-  // Commit 2: Triggered by the eviction, let it go through and then set
-  // needsCommit.
-  // Commit 3: Triggered by the setNeedsCommit. In Layout(), post an eviction
-  // task, which will be handled before the commit. Don't set needsCommit, it
-  // should have been posted. A frame should not be drawn (note,
-  // didCommitAndDrawFrame may be called anyway).
-  // Commit 4: Triggered by the eviction, let it go through and then set
-  // needsCommit.
-  // Commit 5: Triggered by the setNeedsCommit, post an eviction task in
-  // Layout(), a frame should not be drawn but a commit will be posted.
-  // Commit 6: Triggered by the eviction, post an eviction task in
-  // Layout(), which will be a noop, letting the commit (which recreates the
-  // textures) go through and draw a frame, then end the test.
-  //
-  // Commits 1+2 test the eviction recovery path where eviction happens outside
-  // of the beginFrame/commit pair.
-  // Commits 3+4 test the eviction recovery path where eviction happens inside
-  // the beginFrame/commit pair.
-  // Commits 5+6 test the path where an eviction happens during the eviction
-  // recovery path.
-  void DidCommit() override {
-    switch (num_commits_) {
-      case 1:
-        EXPECT_TRUE(layer_->HaveBackingTexture());
-        PostEvictTextures();
-        break;
-      case 2:
-        EXPECT_TRUE(layer_->HaveBackingTexture());
-        layer_tree_host()->SetNeedsCommit();
-        break;
-      case 3:
-        break;
-      case 4:
-        EXPECT_TRUE(layer_->HaveBackingTexture());
-        layer_tree_host()->SetNeedsCommit();
-        break;
-      case 5:
-        break;
-      case 6:
-        EXPECT_TRUE(layer_->HaveBackingTexture());
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    impl_for_evict_textures_ = impl;
-  }
-
-  void Layout() override {
-    ++num_commits_;
-    switch (num_commits_) {
-      case 1:
-      case 2:
-        break;
-      case 3:
-        PostEvictTextures();
-        break;
-      case 4:
-        // We couldn't check in didCommitAndDrawFrame on commit 3,
-        // so check here.
-        EXPECT_FALSE(layer_->HaveBackingTexture());
-        break;
-      case 5:
-        PostEvictTextures();
-        break;
-      case 6:
-        // We couldn't check in didCommitAndDrawFrame on commit 5,
-        // so check here.
-        EXPECT_FALSE(layer_->HaveBackingTexture());
-        PostEvictTextures();
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<EvictionTestLayer> layer_;
-  LayerTreeHostImpl* impl_for_evict_textures_;
-  int num_commits_;
-};
-
-MULTI_THREAD_NOIMPL_TEST_F(LayerTreeHostTestEvictTextures);
-
-class LayerTreeHostTestContinuousInvalidate : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestContinuousInvalidate()
-      : num_commit_complete_(0), num_draw_layers_(0) {}
-
-  void BeginTest() override {
-    layer_tree_host()->SetViewportSize(gfx::Size(10, 10));
-    layer_tree_host()->root_layer()->SetBounds(gfx::Size(10, 10));
-
-    if (layer_tree_host()->settings().impl_side_painting)
-      layer_ = FakePictureLayer::Create(&client_);
-    else
-      layer_ = FakeContentLayer::Create(&client_);
-
-    layer_->SetBounds(gfx::Size(10, 10));
-    layer_->SetPosition(gfx::PointF(0.f, 0.f));
-    layer_->SetIsDrawable(true);
-    layer_tree_host()->root_layer()->AddChild(layer_);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidCommitAndDrawFrame() override {
-    if (num_draw_layers_ == 2)
-      return;
-    layer_->SetNeedsDisplay();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    if (num_draw_layers_ == 1)
-      num_commit_complete_++;
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    num_draw_layers_++;
-    if (num_draw_layers_ == 2)
-      EndTest();
-  }
-
-  void AfterTest() override {
-    // Check that we didn't commit twice between first and second draw.
-    EXPECT_EQ(1, num_commit_complete_);
-  }
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> layer_;
-  int num_commit_complete_;
-  int num_draw_layers_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestContinuousInvalidate);
-
-class LayerTreeHostTestDeferCommits : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestDeferCommits()
-      : num_will_begin_impl_frame_(0),
-        num_send_begin_main_frame_(0) {}
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void WillBeginImplFrame(const BeginFrameArgs& args) override {
-    num_will_begin_impl_frame_++;
-    switch (num_will_begin_impl_frame_) {
-      case 1:
-        break;
-      case 2:
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 3:
-        PostSetDeferCommitsToMainThread(false);
-        break;
-      default:
-        // Sometimes |num_will_begin_impl_frame_| will be greater than 3 if the
-        // main thread is slow to respond.
-        break;
-    }
-  }
-
-  void ScheduledActionSendBeginMainFrame() override {
-    num_send_begin_main_frame_++;
-    switch (num_send_begin_main_frame_) {
-      case 1:
-        PostSetDeferCommitsToMainThread(true);
-        break;
-      case 2:
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void AfterTest() override {
-    EXPECT_GE(num_will_begin_impl_frame_, 3);
-    EXPECT_EQ(2, num_send_begin_main_frame_);
-  }
-
- private:
-  int num_will_begin_impl_frame_;
-  int num_send_begin_main_frame_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestDeferCommits);
-
-class LayerTreeHostWithProxy : public LayerTreeHost {
- public:
-  LayerTreeHostWithProxy(FakeLayerTreeHostClient* client,
-                         const LayerTreeSettings& settings,
-                         scoped_ptr<FakeProxy> proxy)
-      : LayerTreeHost(client, NULL, NULL, NULL, settings) {
-    proxy->SetLayerTreeHost(this);
-    client->SetLayerTreeHost(this);
-    InitializeForTesting(proxy.Pass());
-  }
-};
-
-TEST(LayerTreeHostTest, LimitPartialUpdates) {
-  // When partial updates are not allowed, max updates should be 0.
-  {
-    FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
-
-    scoped_ptr<FakeProxy> proxy(new FakeProxy);
-    proxy->GetRendererCapabilities().allow_partial_texture_updates = false;
-    proxy->SetMaxPartialTextureUpdates(5);
-
-    LayerTreeSettings settings;
-    settings.impl_side_painting = false;
-    settings.max_partial_texture_updates = 10;
-
-    LayerTreeHostWithProxy host(&client, settings, proxy.Pass());
-
-    EXPECT_EQ(0u, host.MaxPartialTextureUpdates());
-  }
-
-  // When partial updates are allowed,
-  // max updates should be limited by the proxy.
-  {
-    FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
-
-    scoped_ptr<FakeProxy> proxy(new FakeProxy);
-    proxy->GetRendererCapabilities().allow_partial_texture_updates = true;
-    proxy->SetMaxPartialTextureUpdates(5);
-
-    LayerTreeSettings settings;
-    settings.impl_side_painting = false;
-    settings.max_partial_texture_updates = 10;
-
-    LayerTreeHostWithProxy host(&client, settings, proxy.Pass());
-
-    EXPECT_EQ(5u, host.MaxPartialTextureUpdates());
-  }
-
-  // When partial updates are allowed,
-  // max updates should also be limited by the settings.
-  {
-    FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
-
-    scoped_ptr<FakeProxy> proxy(new FakeProxy);
-    proxy->GetRendererCapabilities().allow_partial_texture_updates = true;
-    proxy->SetMaxPartialTextureUpdates(20);
-
-    LayerTreeSettings settings;
-    settings.impl_side_painting = false;
-    settings.max_partial_texture_updates = 10;
-
-    LayerTreeHostWithProxy host(&client, settings, proxy.Pass());
-
-    EXPECT_EQ(10u, host.MaxPartialTextureUpdates());
-  }
-}
-
-TEST(LayerTreeHostTest, PartialUpdatesWithGLRenderer) {
-  FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
-
-  LayerTreeSettings settings;
-  settings.max_partial_texture_updates = 4;
-  settings.single_thread_proxy_scheduler = false;
-  settings.impl_side_painting = false;
-
-  scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
-      new TestSharedBitmapManager());
-  scoped_ptr<LayerTreeHost> host = LayerTreeHost::CreateSingleThreaded(
-      &client, &client, shared_bitmap_manager.get(), NULL, NULL, settings,
-      base::MessageLoopProxy::current(), nullptr);
-  client.SetLayerTreeHost(host.get());
-  host->Composite(base::TimeTicks::Now());
-
-  EXPECT_EQ(4u, host->settings().max_partial_texture_updates);
-}
-
-TEST(LayerTreeHostTest, PartialUpdatesWithSoftwareRenderer) {
-  FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_SOFTWARE);
-
-  LayerTreeSettings settings;
-  settings.max_partial_texture_updates = 4;
-  settings.single_thread_proxy_scheduler = false;
-  settings.impl_side_painting = false;
-
-  scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
-      new TestSharedBitmapManager());
-  scoped_ptr<LayerTreeHost> host = LayerTreeHost::CreateSingleThreaded(
-      &client, &client, shared_bitmap_manager.get(), NULL, NULL, settings,
-      base::MessageLoopProxy::current(), nullptr);
-  client.SetLayerTreeHost(host.get());
-  host->Composite(base::TimeTicks::Now());
-
-  EXPECT_EQ(4u, host->settings().max_partial_texture_updates);
-}
-
-TEST(LayerTreeHostTest, PartialUpdatesWithDelegatingRendererAndGLContent) {
-  FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DELEGATED_3D);
-
-  LayerTreeSettings settings;
-  settings.max_partial_texture_updates = 4;
-  settings.single_thread_proxy_scheduler = false;
-  settings.impl_side_painting = false;
-
-  scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
-      new TestSharedBitmapManager());
-  scoped_ptr<LayerTreeHost> host = LayerTreeHost::CreateSingleThreaded(
-      &client, &client, shared_bitmap_manager.get(), NULL, NULL, settings,
-      base::MessageLoopProxy::current(), nullptr);
-  client.SetLayerTreeHost(host.get());
-  host->Composite(base::TimeTicks::Now());
-
-  EXPECT_EQ(0u, host->MaxPartialTextureUpdates());
-}
-
-TEST(LayerTreeHostTest,
-     PartialUpdatesWithDelegatingRendererAndSoftwareContent) {
-  FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DELEGATED_SOFTWARE);
-
-  LayerTreeSettings settings;
-  settings.max_partial_texture_updates = 4;
-  settings.single_thread_proxy_scheduler = false;
-  settings.impl_side_painting = false;
-
-  scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
-      new TestSharedBitmapManager());
-  scoped_ptr<LayerTreeHost> host = LayerTreeHost::CreateSingleThreaded(
-      &client, &client, shared_bitmap_manager.get(), NULL, NULL, settings,
-      base::MessageLoopProxy::current(), nullptr);
-  client.SetLayerTreeHost(host.get());
-  host->Composite(base::TimeTicks::Now());
-
-  EXPECT_EQ(0u, host->MaxPartialTextureUpdates());
-}
-
-// TODO(sohanjg) : Remove it once impl-side painting ships everywhere.
-class LayerTreeHostTestShutdownWithOnlySomeResourcesEvicted
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestShutdownWithOnlySomeResourcesEvicted()
-      : root_layer_(FakeContentLayer::Create(&client_)),
-        child_layer1_(FakeContentLayer::Create(&client_)),
-        child_layer2_(FakeContentLayer::Create(&client_)),
-        num_commits_(0) {}
-
-  void BeginTest() override {
-    layer_tree_host()->SetViewportSize(gfx::Size(100, 100));
-    root_layer_->SetBounds(gfx::Size(100, 100));
-    child_layer1_->SetBounds(gfx::Size(100, 100));
-    child_layer2_->SetBounds(gfx::Size(100, 100));
-    root_layer_->AddChild(child_layer1_);
-    root_layer_->AddChild(child_layer2_);
-    layer_tree_host()->SetRootLayer(root_layer_);
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidSetVisibleOnImplTree(LayerTreeHostImpl* host_impl,
-                               bool visible) override {
-    if (visible) {
-      // One backing should remain unevicted.
-      EXPECT_EQ(100u * 100u * 4u * 1u,
-                contents_texture_manager_->MemoryUseBytes());
-    } else {
-      EXPECT_EQ(0u, contents_texture_manager_->MemoryUseBytes());
-    }
-
-    // Make sure that contents textures are marked as having been
-    // purged.
-    EXPECT_TRUE(host_impl->active_tree()->ContentsTexturesPurged());
-    // End the test in this state.
-    EndTest();
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    ++num_commits_;
-    switch (num_commits_) {
-      case 1:
-        // All three backings should have memory.
-        EXPECT_EQ(100u * 100u * 4u * 3u,
-                  contents_texture_manager_->MemoryUseBytes());
-
-        // Set a new policy that will kick out 1 of the 3 resources.
-        // Because a resource was evicted, a commit will be kicked off.
-        host_impl->SetMemoryPolicy(
-            ManagedMemoryPolicy(100 * 100 * 4 * 2,
-                                gpu::MemoryAllocation::CUTOFF_ALLOW_EVERYTHING,
-                                1000));
-        break;
-      case 2:
-        // Only two backings should have memory.
-        EXPECT_EQ(100u * 100u * 4u * 2u,
-                  contents_texture_manager_->MemoryUseBytes());
-        // Become backgrounded, which will cause 1 more resource to be
-        // evicted.
-        PostSetVisibleToMainThread(false);
-        break;
-      default:
-        // No further commits should happen because this is not visible
-        // anymore.
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<FakeContentLayer> root_layer_;
-  scoped_refptr<FakeContentLayer> child_layer1_;
-  scoped_refptr<FakeContentLayer> child_layer2_;
-  int num_commits_;
-};
-
-SINGLE_AND_MULTI_THREAD_NOIMPL_TEST_F(
-    LayerTreeHostTestShutdownWithOnlySomeResourcesEvicted);
-
-class LayerTreeHostTestLCDChange : public LayerTreeHostTest {
- public:
-  void SetupTree() override {
-    num_tiles_rastered_ = 0;
-
-    scoped_refptr<Layer> root_layer = PictureLayer::Create(&client_);
-    client_.set_fill_with_nonsolid_color(true);
-    root_layer->SetIsDrawable(true);
-    root_layer->SetBounds(gfx::Size(10, 10));
-    root_layer->SetContentsOpaque(true);
-
-    layer_tree_host()->SetRootLayer(root_layer);
-
-    // The expectations are based on the assumption that the default
-    // LCD settings are:
-    EXPECT_TRUE(layer_tree_host()->settings().can_use_lcd_text);
-
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidCommitAndDrawFrame() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 2:
-        // Change layer opacity that should trigger lcd change.
-        layer_tree_host()->root_layer()->SetOpacity(.5f);
-        break;
-      case 3:
-        // Change layer opacity that should not trigger lcd change.
-        layer_tree_host()->root_layer()->SetOpacity(1.f);
-        break;
-      case 4:
-        EndTest();
-        break;
-    }
-  }
-
-  void NotifyTileStateChangedOnThread(LayerTreeHostImpl* host_impl,
-                                      const Tile* tile) override {
-    ++num_tiles_rastered_;
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    PictureLayerImpl* root_layer =
-        static_cast<PictureLayerImpl*>(host_impl->active_tree()->root_layer());
-    bool can_use_lcd_text =
-        host_impl->active_tree()->root_layer()->can_use_lcd_text();
-    switch (host_impl->active_tree()->source_frame_number()) {
-      case 0:
-        // The first draw.
-        EXPECT_EQ(1, num_tiles_rastered_);
-        EXPECT_TRUE(can_use_lcd_text);
-        EXPECT_TRUE(root_layer->RasterSourceUsesLCDText());
-        break;
-      case 1:
-        // Nothing changed on the layer.
-        EXPECT_EQ(1, num_tiles_rastered_);
-        EXPECT_TRUE(can_use_lcd_text);
-        EXPECT_TRUE(root_layer->RasterSourceUsesLCDText());
-        break;
-      case 2:
-        // LCD text was disabled; it should be re-rastered with LCD text off.
-        EXPECT_EQ(2, num_tiles_rastered_);
-        EXPECT_FALSE(can_use_lcd_text);
-        EXPECT_FALSE(root_layer->RasterSourceUsesLCDText());
-        break;
-      case 3:
-        // LCD text was enabled, but it's sticky and stays off.
-        EXPECT_EQ(2, num_tiles_rastered_);
-        EXPECT_TRUE(can_use_lcd_text);
-        EXPECT_FALSE(root_layer->RasterSourceUsesLCDText());
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  int num_tiles_rastered_;
-};
-
-SINGLE_AND_MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestLCDChange);
-
-// Verify that the BeginFrame notification is used to initiate rendering.
-class LayerTreeHostTestBeginFrameNotification : public LayerTreeHostTest {
- public:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->use_external_begin_frame_source = true;
-  }
-
-  void BeginTest() override {
-    // This will trigger a SetNeedsBeginFrame which will trigger a
-    // BeginFrame.
-    PostSetNeedsCommitToMainThread();
-  }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame,
-                                   DrawResult draw_result) override {
-    EndTest();
-    return DRAW_SUCCESS;
-  }
-
-  void AfterTest() override {}
-
- private:
-  base::TimeTicks frame_time_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestBeginFrameNotification);
-
-class LayerTreeHostTestBeginFrameNotificationShutdownWhileEnabled
-    : public LayerTreeHostTest {
- public:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->use_external_begin_frame_source = true;
-    settings->using_synchronous_renderer_compositor = true;
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    // The BeginFrame notification is turned off now but will get enabled
-    // once we return. End test while it's enabled.
-    ImplThreadTaskRunner()->PostTask(
-        FROM_HERE,
-        base::Bind(&LayerTreeHostTestBeginFrameNotification::EndTest,
-                   base::Unretained(this)));
-  }
-
-  void AfterTest() override {}
-};
-
-MULTI_THREAD_TEST_F(
-    LayerTreeHostTestBeginFrameNotificationShutdownWhileEnabled);
-
-class LayerTreeHostTestAbortedCommitDoesntStall : public LayerTreeHostTest {
- protected:
-  LayerTreeHostTestAbortedCommitDoesntStall()
-      : commit_count_(0), commit_abort_count_(0), commit_complete_count_(0) {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->use_external_begin_frame_source = true;
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidCommit() override {
-    commit_count_++;
-    if (commit_count_ == 4) {
-      // After two aborted commits, request a real commit now to make sure a
-      // real commit following an aborted commit will still complete and
-      // end the test even when the Impl thread is idle.
-      layer_tree_host()->SetNeedsCommit();
-    }
-  }
-
-  void BeginMainFrameAbortedOnThread(LayerTreeHostImpl* host_impl,
-                                     CommitEarlyOutReason reason) override {
-    commit_abort_count_++;
-    // Initiate another abortable commit.
-    host_impl->SetNeedsCommit();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    commit_complete_count_++;
-    if (commit_complete_count_ == 1) {
-      // Initiate an abortable commit after the first commit.
-      host_impl->SetNeedsCommit();
-    } else {
-      EndTest();
-    }
-  }
-
-  void AfterTest() override {
-    EXPECT_EQ(commit_count_, 5);
-    EXPECT_EQ(commit_abort_count_, 3);
-    EXPECT_EQ(commit_complete_count_, 2);
-  }
-
-  int commit_count_;
-  int commit_abort_count_;
-  int commit_complete_count_;
-};
-
-class LayerTreeHostTestAbortedCommitDoesntStallSynchronousCompositor
-    : public LayerTreeHostTestAbortedCommitDoesntStall {
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    LayerTreeHostTestAbortedCommitDoesntStall::InitializeSettings(settings);
-    settings->using_synchronous_renderer_compositor = true;
-  }
-};
-
-MULTI_THREAD_TEST_F(
-    LayerTreeHostTestAbortedCommitDoesntStallSynchronousCompositor);
-
-class LayerTreeHostTestAbortedCommitDoesntStallDisabledVsync
-    : public LayerTreeHostTestAbortedCommitDoesntStall {
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    LayerTreeHostTestAbortedCommitDoesntStall::InitializeSettings(settings);
-    settings->throttle_frame_production = false;
-  }
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestAbortedCommitDoesntStallDisabledVsync);
-
-class LayerTreeHostTestUninvertibleTransformDoesNotBlockActivation
-    : public LayerTreeHostTest {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-  }
-
-  void SetupTree() override {
-    LayerTreeHostTest::SetupTree();
-
-    scoped_refptr<Layer> layer = PictureLayer::Create(&client_);
-    layer->SetTransform(gfx::Transform(0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
-    layer->SetBounds(gfx::Size(10, 10));
-    layer_tree_host()->root_layer()->AddChild(layer);
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient client_;
-};
-
-MULTI_THREAD_TEST_F(
-    LayerTreeHostTestUninvertibleTransformDoesNotBlockActivation);
-
-class LayerTreeHostTestChangeLayerPropertiesInPaintContents
-    : public LayerTreeHostTest {
- public:
-  class SetBoundsClient : public ContentLayerClient {
-   public:
-    SetBoundsClient() : layer_(0) {}
-
-    void set_layer(Layer* layer) { layer_ = layer; }
-
-    void PaintContents(SkCanvas* canvas,
-                       const gfx::Rect& clip,
-                       PaintingControlSetting picture_control) override {
-      layer_->SetBounds(gfx::Size(2, 2));
-    }
-
-    scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
-        const gfx::Rect& clip,
-        PaintingControlSetting picture_control) override {
-      NOTIMPLEMENTED();
-      return DisplayItemList::Create();
-    }
-
-    bool FillsBoundsCompletely() const override { return false; }
-
-   private:
-    Layer* layer_;
-  };
-
-  LayerTreeHostTestChangeLayerPropertiesInPaintContents() : num_commits_(0) {}
-
-  void SetupTree() override {
-    if (layer_tree_host()->settings().impl_side_painting) {
-      scoped_refptr<PictureLayer> root_layer = PictureLayer::Create(&client_);
-      layer_tree_host()->SetRootLayer(root_layer);
-    } else {
-      scoped_refptr<ContentLayer> root_layer = ContentLayer::Create(&client_);
-      layer_tree_host()->SetRootLayer(root_layer);
-    }
-    Layer* root_layer = layer_tree_host()->root_layer();
-    root_layer->SetIsDrawable(true);
-    root_layer->SetBounds(gfx::Size(1, 1));
-
-    client_.set_layer(root_layer);
-
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-  void AfterTest() override {}
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    num_commits_++;
-    if (num_commits_ == 1) {
-      LayerImpl* root_layer = host_impl->active_tree()->root_layer();
-      EXPECT_EQ(gfx::Size(1, 1), root_layer->bounds());
-    } else {
-      LayerImpl* root_layer = host_impl->active_tree()->root_layer();
-      EXPECT_EQ(gfx::Size(2, 2), root_layer->bounds());
-      EndTest();
-    }
-  }
-
- private:
-  SetBoundsClient client_;
-  int num_commits_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(
-    LayerTreeHostTestChangeLayerPropertiesInPaintContents);
-
-class MockIOSurfaceWebGraphicsContext3D : public TestWebGraphicsContext3D {
- public:
-  MockIOSurfaceWebGraphicsContext3D() {
-    test_capabilities_.gpu.iosurface = true;
-    test_capabilities_.gpu.texture_rectangle = true;
-  }
-
-  GLuint createTexture() override { return 1; }
-  MOCK_METHOD1(activeTexture, void(GLenum texture));
-  MOCK_METHOD2(bindTexture, void(GLenum target,
-                                 GLuint texture_id));
-  MOCK_METHOD3(texParameteri, void(GLenum target,
-                                   GLenum pname,
-                                   GLint param));
-  MOCK_METHOD5(texImageIOSurface2DCHROMIUM, void(GLenum target,
-                                                 GLint width,
-                                                 GLint height,
-                                                 GLuint ioSurfaceId,
-                                                 GLuint plane));
-  MOCK_METHOD4(drawElements, void(GLenum mode,
-                                  GLsizei count,
-                                  GLenum type,
-                                  GLintptr offset));
-  MOCK_METHOD1(deleteTexture, void(GLenum texture));
-  MOCK_METHOD3(produceTextureDirectCHROMIUM,
-               void(GLuint texture, GLenum target, const GLbyte* mailbox));
-};
-
-class LayerTreeHostTestIOSurfaceDrawing : public LayerTreeHostTest {
- protected:
-  scoped_ptr<FakeOutputSurface> CreateFakeOutputSurface() override {
-    scoped_ptr<MockIOSurfaceWebGraphicsContext3D> mock_context_owned(
-        new MockIOSurfaceWebGraphicsContext3D);
-    mock_context_ = mock_context_owned.get();
-
-    if (delegating_renderer())
-      return FakeOutputSurface::CreateDelegating3d(mock_context_owned.Pass());
-    else
-      return FakeOutputSurface::Create3d(mock_context_owned.Pass());
-  }
-
-  void SetupTree() override {
-    LayerTreeHostTest::SetupTree();
-
-    layer_tree_host()->root_layer()->SetIsDrawable(false);
-
-    io_surface_id_ = 9;
-    io_surface_size_ = gfx::Size(6, 7);
-
-    scoped_refptr<IOSurfaceLayer> io_surface_layer = IOSurfaceLayer::Create();
-    io_surface_layer->SetBounds(gfx::Size(10, 10));
-    io_surface_layer->SetIsDrawable(true);
-    io_surface_layer->SetContentsOpaque(true);
-    io_surface_layer->SetIOSurfaceProperties(io_surface_id_, io_surface_size_);
-    layer_tree_host()->root_layer()->AddChild(io_surface_layer);
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    EXPECT_EQ(0u, host_impl->resource_provider()->num_resources());
-    // In WillDraw, the IOSurfaceLayer sets up the io surface texture.
-
-    EXPECT_CALL(*mock_context_, activeTexture(_)).Times(0);
-    EXPECT_CALL(*mock_context_, bindTexture(GL_TEXTURE_RECTANGLE_ARB, 1))
-        .Times(AtLeast(1));
-    EXPECT_CALL(*mock_context_,
-                texParameteri(
-                    GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR))
-        .Times(1);
-    EXPECT_CALL(*mock_context_,
-                texParameteri(
-                    GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR))
-        .Times(1);
-    EXPECT_CALL(*mock_context_,
-                texParameteri(GL_TEXTURE_RECTANGLE_ARB,
-                              GL_TEXTURE_POOL_CHROMIUM,
-                              GL_TEXTURE_POOL_UNMANAGED_CHROMIUM)).Times(1);
-    EXPECT_CALL(*mock_context_,
-                texParameteri(GL_TEXTURE_RECTANGLE_ARB,
-                              GL_TEXTURE_WRAP_S,
-                              GL_CLAMP_TO_EDGE)).Times(1);
-    EXPECT_CALL(*mock_context_,
-                texParameteri(GL_TEXTURE_RECTANGLE_ARB,
-                              GL_TEXTURE_WRAP_T,
-                              GL_CLAMP_TO_EDGE)).Times(1);
-
-    EXPECT_CALL(*mock_context_,
-                texImageIOSurface2DCHROMIUM(GL_TEXTURE_RECTANGLE_ARB,
-                                            io_surface_size_.width(),
-                                            io_surface_size_.height(),
-                                            io_surface_id_,
-                                            0)).Times(1);
-
-    EXPECT_CALL(*mock_context_, bindTexture(_, 0)).Times(AnyNumber());
-  }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame,
-                                   DrawResult draw_result) override {
-    Mock::VerifyAndClearExpectations(&mock_context_);
-    ResourceProvider* resource_provider = host_impl->resource_provider();
-    EXPECT_EQ(1u, resource_provider->num_resources());
-    CHECK_EQ(1u, frame->render_passes.size());
-    CHECK_LE(1u, frame->render_passes[0]->quad_list.size());
-    const DrawQuad* quad = frame->render_passes[0]->quad_list.front();
-    CHECK_EQ(DrawQuad::IO_SURFACE_CONTENT, quad->material);
-    const IOSurfaceDrawQuad* io_surface_draw_quad =
-        IOSurfaceDrawQuad::MaterialCast(quad);
-    EXPECT_EQ(io_surface_size_, io_surface_draw_quad->io_surface_size);
-    EXPECT_NE(0u, io_surface_draw_quad->io_surface_resource_id);
-    EXPECT_EQ(static_cast<GLenum>(GL_TEXTURE_RECTANGLE_ARB),
-              resource_provider->TargetForTesting(
-                  io_surface_draw_quad->io_surface_resource_id));
-
-    if (delegating_renderer()) {
-      // The io surface layer's resource should be sent to the parent.
-      EXPECT_CALL(*mock_context_, produceTextureDirectCHROMIUM(
-                                      _, GL_TEXTURE_RECTANGLE_ARB, _)).Times(1);
-    } else {
-      // The io surface layer's texture is drawn.
-      EXPECT_CALL(*mock_context_, activeTexture(GL_TEXTURE0)).Times(AtLeast(1));
-      EXPECT_CALL(*mock_context_, drawElements(GL_TRIANGLES, 6, _, _))
-          .Times(AtLeast(1));
-    }
-
-    return draw_result;
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    Mock::VerifyAndClearExpectations(&mock_context_);
-
-    EXPECT_CALL(*mock_context_, deleteTexture(1)).Times(AtLeast(1));
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
-  int io_surface_id_;
-  MockIOSurfaceWebGraphicsContext3D* mock_context_;
-  gfx::Size io_surface_size_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestIOSurfaceDrawing);
-
-class LayerTreeHostTestNumFramesPending : public LayerTreeHostTest {
- public:
-  void BeginTest() override {
-    frame_ = 0;
-    PostSetNeedsCommitToMainThread();
-  }
-
-  // Round 1: commit + draw
-  // Round 2: commit only (no draw/swap)
-  // Round 3: draw only (no commit)
-
-  void DidCommit() override {
-    int commit = layer_tree_host()->source_frame_number();
-    switch (commit) {
-      case 2:
-        // Round 2 done.
-        EXPECT_EQ(1, frame_);
-        layer_tree_host()->SetNeedsRedraw();
-        break;
-    }
-  }
-
-  void DidCompleteSwapBuffers() override {
-    int commit = layer_tree_host()->source_frame_number();
-    ++frame_;
-    switch (frame_) {
-      case 1:
-        // Round 1 done.
-        EXPECT_EQ(1, commit);
-        layer_tree_host()->SetNeedsCommit();
-        break;
-      case 2:
-        // Round 3 done.
-        EXPECT_EQ(2, commit);
-        EndTest();
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
- protected:
-  int frame_;
-};
-
-// Flaky on all platforms: http://crbug.com/327498
-TEST_F(LayerTreeHostTestNumFramesPending, DISABLED_DelegatingRenderer) {
-  RunTest(true, true, true);
-}
-
-TEST_F(LayerTreeHostTestNumFramesPending, DISABLED_GLRenderer) {
-  RunTest(true, false, true);
-}
-
-class LayerTreeHostTestDeferredInitialize : public LayerTreeHostTest {
- public:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    // PictureLayer can only be used with impl side painting enabled.
-    settings->impl_side_painting = true;
-  }
-
-  void SetupTree() override {
-    layer_ = FakePictureLayer::Create(&client_);
-    // Force commits to not be aborted so new frames get drawn, otherwise
-    // the renderer gets deferred initialized but nothing new needs drawing.
-    layer_->set_always_update_resources(true);
-    layer_tree_host()->SetRootLayer(layer_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override {
-    did_initialize_gl_ = false;
-    did_release_gl_ = false;
-    last_source_frame_number_drawn_ = -1;  // Never drawn.
-    PostSetNeedsCommitToMainThread();
-  }
-
-  scoped_ptr<FakeOutputSurface> CreateFakeOutputSurface() override {
-    scoped_ptr<TestWebGraphicsContext3D> context3d(
-        TestWebGraphicsContext3D::Create());
-
-    return FakeOutputSurface::CreateDeferredGL(
-        scoped_ptr<SoftwareOutputDevice>(new SoftwareOutputDevice),
-        delegating_renderer());
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    ASSERT_TRUE(host_impl->RootLayer());
-    FakePictureLayerImpl* layer_impl =
-        static_cast<FakePictureLayerImpl*>(host_impl->RootLayer());
-
-    // The same frame can be draw multiple times if new visible tiles are
-    // rasterized. But we want to make sure we only post DeferredInitialize
-    // and ReleaseGL once, so early out if the same frame is drawn again.
-    if (last_source_frame_number_drawn_ ==
-        host_impl->active_tree()->source_frame_number())
-      return;
-
-    last_source_frame_number_drawn_ =
-        host_impl->active_tree()->source_frame_number();
-
-    if (!did_initialize_gl_) {
-      EXPECT_LE(1u, layer_impl->append_quads_count());
-      ImplThreadTaskRunner()->PostTask(
-          FROM_HERE,
-          base::Bind(
-              &LayerTreeHostTestDeferredInitialize::DeferredInitializeAndRedraw,
-              base::Unretained(this),
-              base::Unretained(host_impl)));
-    } else if (did_initialize_gl_ && !did_release_gl_) {
-      EXPECT_LE(2u, layer_impl->append_quads_count());
-      ImplThreadTaskRunner()->PostTask(
-          FROM_HERE,
-          base::Bind(&LayerTreeHostTestDeferredInitialize::ReleaseGLAndRedraw,
-                     base::Unretained(this),
-                     base::Unretained(host_impl)));
-    } else if (did_initialize_gl_ && did_release_gl_) {
-      EXPECT_LE(3u, layer_impl->append_quads_count());
-      EndTest();
-    }
-  }
-
-  void DeferredInitializeAndRedraw(LayerTreeHostImpl* host_impl) {
-    EXPECT_FALSE(did_initialize_gl_);
-    // SetAndInitializeContext3D calls SetNeedsCommit.
-    FakeOutputSurface* fake_output_surface =
-        static_cast<FakeOutputSurface*>(host_impl->output_surface());
-    scoped_refptr<TestContextProvider> context_provider =
-        TestContextProvider::Create();  // Not bound to thread.
-    scoped_refptr<TestContextProvider> worker_context_provider =
-        TestContextProvider::Create();  // Not bound to thread.
-    EXPECT_TRUE(fake_output_surface->InitializeAndSetContext3d(
-        context_provider, worker_context_provider));
-    did_initialize_gl_ = true;
-  }
-
-  void ReleaseGLAndRedraw(LayerTreeHostImpl* host_impl) {
-    EXPECT_TRUE(did_initialize_gl_);
-    EXPECT_FALSE(did_release_gl_);
-    // ReleaseGL calls SetNeedsCommit.
-    static_cast<FakeOutputSurface*>(host_impl->output_surface())->ReleaseGL();
-    did_release_gl_ = true;
-  }
-
-  void SwapBuffersOnThread(LayerTreeHostImpl* host_impl, bool result) override {
-    ASSERT_TRUE(result);
-    DelegatedFrameData* delegated_frame_data =
-        output_surface()->last_sent_frame().delegated_frame_data.get();
-    if (!delegated_frame_data)
-      return;
-
-    // Return all resources immediately.
-    TransferableResourceArray resources_to_return =
-        output_surface()->resources_held_by_parent();
-
-    CompositorFrameAck ack;
-    for (size_t i = 0; i < resources_to_return.size(); ++i)
-      output_surface()->ReturnResource(resources_to_return[i].id, &ack);
-    host_impl->ReclaimResources(&ack);
-  }
-
-  void AfterTest() override {
-    EXPECT_TRUE(did_initialize_gl_);
-    EXPECT_TRUE(did_release_gl_);
-  }
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<FakePictureLayer> layer_;
-  bool did_initialize_gl_;
-  bool did_release_gl_;
-  int last_source_frame_number_drawn_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestDeferredInitialize);
-
-class LayerTreeHostTestResourcelessSoftwareDraw : public LayerTreeHostTest {
- public:
-  void SetupTree() override {
-    root_layer_ = FakePictureLayer::Create(&client_);
-    root_layer_->SetIsDrawable(true);
-    root_layer_->SetBounds(gfx::Size(50, 50));
-
-    parent_layer_ = FakePictureLayer::Create(&client_);
-    parent_layer_->SetIsDrawable(true);
-    parent_layer_->SetBounds(gfx::Size(50, 50));
-    parent_layer_->SetForceRenderSurface(true);
-
-    child_layer_ = FakePictureLayer::Create(&client_);
-    child_layer_->SetIsDrawable(true);
-    child_layer_->SetBounds(gfx::Size(50, 50));
-
-    root_layer_->AddChild(parent_layer_);
-    parent_layer_->AddChild(child_layer_);
-    layer_tree_host()->SetRootLayer(root_layer_);
-
-    LayerTreeHostTest::SetupTree();
-  }
-
-  scoped_ptr<FakeOutputSurface> CreateFakeOutputSurface() override {
-    return FakeOutputSurface::CreateDeferredGL(
-        make_scoped_ptr(new SoftwareOutputDevice), delegating_renderer());
-  }
-
-  void BeginTest() override {
-    PostSetNeedsCommitToMainThread();
-    swap_count_ = 0;
-  }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    if (host_impl->GetDrawMode() == DRAW_MODE_RESOURCELESS_SOFTWARE) {
-      EXPECT_EQ(1u, frame_data->render_passes.size());
-      // Has at least 3 quads for each layer.
-      RenderPass* render_pass = frame_data->render_passes[0];
-      EXPECT_GE(render_pass->quad_list.size(), 3u);
-    } else {
-      EXPECT_EQ(2u, frame_data->render_passes.size());
-
-      // At least root layer quad in root render pass.
-      EXPECT_GE(frame_data->render_passes[0]->quad_list.size(), 1u);
-      // At least parent and child layer quads in parent render pass.
-      EXPECT_GE(frame_data->render_passes[1]->quad_list.size(), 2u);
-    }
-    return draw_result;
-  }
-
-  void SwapBuffersCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    swap_count_++;
-    switch (swap_count_) {
-      case 1: {
-        gfx::Transform identity;
-        gfx::Rect empty_rect;
-        bool resourceless_software_draw = true;
-        host_impl->SetExternalDrawConstraints(identity, empty_rect, empty_rect,
-                                              empty_rect, identity,
-                                              resourceless_software_draw);
-        host_impl->SetFullRootLayerDamage();
-        host_impl->SetNeedsRedraw();
-        break;
-      }
-      case 2:
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> root_layer_;
-  scoped_refptr<Layer> parent_layer_;
-  scoped_refptr<Layer> child_layer_;
-  int swap_count_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestResourcelessSoftwareDraw);
-
-class LayerTreeHostTestDeferredInitializeWithGpuRasterization
-    : public LayerTreeHostTestDeferredInitialize {
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    // PictureLayer can only be used with impl side painting enabled.
-    settings->impl_side_painting = true;
-    settings->gpu_rasterization_enabled = true;
-    settings->gpu_rasterization_forced = true;
-  }
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestDeferredInitializeWithGpuRasterization);
-
-// Test for UI Resource management.
-class LayerTreeHostTestUIResource : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestUIResource() : num_ui_resources_(0) {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->renderer_settings.texture_id_allocation_chunk_size = 1;
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidCommit() override {
-    int frame = layer_tree_host()->source_frame_number();
-    switch (frame) {
-      case 1:
-        CreateResource();
-        CreateResource();
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 2:
-        // Usually ScopedUIResource are deleted from the manager in their
-        // destructor.  Here we just want to test that a direct call to
-        // DeleteUIResource works.
-        layer_tree_host()->DeleteUIResource(ui_resources_[0]->id());
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 3:
-        // DeleteUIResource can be called with an invalid id.
-        layer_tree_host()->DeleteUIResource(ui_resources_[0]->id());
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 4:
-        CreateResource();
-        CreateResource();
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 5:
-        ClearResources();
-        EndTest();
-        break;
-    }
-  }
-
-  void PerformTest(LayerTreeHostImpl* impl) {
-    TestWebGraphicsContext3D* context = TestContext();
-
-    int frame = impl->active_tree()->source_frame_number();
-    switch (frame) {
-      case 0:
-        ASSERT_EQ(0u, context->NumTextures());
-        break;
-      case 1:
-        // Created two textures.
-        ASSERT_EQ(2u, context->NumTextures());
-        break;
-      case 2:
-        // One texture left after one deletion.
-        ASSERT_EQ(1u, context->NumTextures());
-        break;
-      case 3:
-        // Resource manager state should not change when delete is called on an
-        // invalid id.
-        ASSERT_EQ(1u, context->NumTextures());
-        break;
-      case 4:
-        // Creation after deletion: two more creates should total up to
-        // three textures.
-        ASSERT_EQ(3u, context->NumTextures());
-        break;
-    }
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    if (!impl->settings().impl_side_painting)
-      PerformTest(impl);
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    if (impl->settings().impl_side_painting)
-      PerformTest(impl);
-  }
-
-  void AfterTest() override {}
-
- private:
-  // Must clear all resources before exiting.
-  void ClearResources() {
-    for (int i = 0; i < num_ui_resources_; i++)
-      ui_resources_[i] = nullptr;
-  }
-
-  void CreateResource() {
-    ui_resources_[num_ui_resources_++] =
-        FakeScopedUIResource::Create(layer_tree_host());
-  }
-
-  scoped_ptr<FakeScopedUIResource> ui_resources_[5];
-  int num_ui_resources_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestUIResource);
-
-class PushPropertiesCountingLayerImpl : public LayerImpl {
- public:
-  static scoped_ptr<PushPropertiesCountingLayerImpl> Create(
-      LayerTreeImpl* tree_impl, int id) {
-    return make_scoped_ptr(new PushPropertiesCountingLayerImpl(tree_impl, id));
-  }
-
-  ~PushPropertiesCountingLayerImpl() override {}
-
-  void PushPropertiesTo(LayerImpl* layer) override {
-    LayerImpl::PushPropertiesTo(layer);
-    push_properties_count_++;
-    // Push state to the active tree because we can only access it from there.
-    static_cast<PushPropertiesCountingLayerImpl*>(
-        layer)->push_properties_count_ = push_properties_count_;
-  }
-
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override {
-    return PushPropertiesCountingLayerImpl::Create(tree_impl, id());
-  }
-
-  size_t push_properties_count() const { return push_properties_count_; }
-  void reset_push_properties_count() { push_properties_count_ = 0; }
-
- private:
-  size_t push_properties_count_;
-
-  PushPropertiesCountingLayerImpl(LayerTreeImpl* tree_impl, int id)
-      : LayerImpl(tree_impl, id),
-        push_properties_count_(0) {
-    SetBounds(gfx::Size(1, 1));
-  }
-};
-
-class PushPropertiesCountingLayer : public Layer {
- public:
-  static scoped_refptr<PushPropertiesCountingLayer> Create() {
-    return new PushPropertiesCountingLayer();
-  }
-
-  void PushPropertiesTo(LayerImpl* layer) override {
-    Layer::PushPropertiesTo(layer);
-    push_properties_count_++;
-    if (persist_needs_push_properties_)
-      needs_push_properties_ = true;
-  }
-
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override {
-    return PushPropertiesCountingLayerImpl::Create(tree_impl, id());
-  }
-
-  void SetDrawsContent(bool draws_content) { SetIsDrawable(draws_content); }
-
-  size_t push_properties_count() const { return push_properties_count_; }
-  void reset_push_properties_count() { push_properties_count_ = 0; }
-
-  void set_persist_needs_push_properties(bool persist) {
-    persist_needs_push_properties_ = persist;
-  }
-
- private:
-  PushPropertiesCountingLayer()
-      : push_properties_count_(0), persist_needs_push_properties_(false) {
-    SetBounds(gfx::Size(1, 1));
-  }
-  ~PushPropertiesCountingLayer() override {}
-
-  size_t push_properties_count_;
-  bool persist_needs_push_properties_;
-};
-
-class LayerTreeHostTestLayersPushProperties : public LayerTreeHostTest {
- protected:
-  void BeginTest() override {
-    num_commits_ = 0;
-    expected_push_properties_root_ = 0;
-    expected_push_properties_child_ = 0;
-    expected_push_properties_grandchild_ = 0;
-    expected_push_properties_child2_ = 0;
-    expected_push_properties_other_root_ = 0;
-    expected_push_properties_leaf_layer_ = 0;
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void SetupTree() override {
-    root_ = PushPropertiesCountingLayer::Create();
-    root_->CreateRenderSurface();
-    child_ = PushPropertiesCountingLayer::Create();
-    child2_ = PushPropertiesCountingLayer::Create();
-    grandchild_ = PushPropertiesCountingLayer::Create();
-    leaf_always_pushing_layer_ = PushPropertiesCountingLayer::Create();
-    leaf_always_pushing_layer_->set_persist_needs_push_properties(true);
-
-    root_->AddChild(child_);
-    root_->AddChild(child2_);
-    child_->AddChild(grandchild_);
-    child2_->AddChild(leaf_always_pushing_layer_);
-
-    other_root_ = PushPropertiesCountingLayer::Create();
-    other_root_->CreateRenderSurface();
-
-    // Don't set the root layer here.
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void DidCommitAndDrawFrame() override {
-    ++num_commits_;
-
-    EXPECT_EQ(expected_push_properties_root_, root_->push_properties_count());
-    EXPECT_EQ(expected_push_properties_child_, child_->push_properties_count());
-    EXPECT_EQ(expected_push_properties_grandchild_,
-              grandchild_->push_properties_count());
-    EXPECT_EQ(expected_push_properties_child2_,
-              child2_->push_properties_count());
-    EXPECT_EQ(expected_push_properties_other_root_,
-              other_root_->push_properties_count());
-    EXPECT_EQ(expected_push_properties_leaf_layer_,
-              leaf_always_pushing_layer_->push_properties_count());
-
-    // The scrollbar layer always needs to be pushed.
-    if (root_->layer_tree_host()) {
-      EXPECT_TRUE(root_->descendant_needs_push_properties());
-      EXPECT_FALSE(root_->needs_push_properties());
-    }
-    if (child2_->layer_tree_host()) {
-      EXPECT_TRUE(child2_->descendant_needs_push_properties());
-      EXPECT_FALSE(child2_->needs_push_properties());
-    }
-    if (leaf_always_pushing_layer_->layer_tree_host()) {
-      EXPECT_FALSE(
-          leaf_always_pushing_layer_->descendant_needs_push_properties());
-      EXPECT_TRUE(leaf_always_pushing_layer_->needs_push_properties());
-    }
-
-    // child_ and grandchild_ don't persist their need to push properties.
-    if (child_->layer_tree_host()) {
-      EXPECT_FALSE(child_->descendant_needs_push_properties());
-      EXPECT_FALSE(child_->needs_push_properties());
-    }
-    if (grandchild_->layer_tree_host()) {
-      EXPECT_FALSE(grandchild_->descendant_needs_push_properties());
-      EXPECT_FALSE(grandchild_->needs_push_properties());
-    }
-
-    if (other_root_->layer_tree_host()) {
-      EXPECT_FALSE(other_root_->descendant_needs_push_properties());
-      EXPECT_FALSE(other_root_->needs_push_properties());
-    }
-
-    switch (num_commits_) {
-      case 1:
-        layer_tree_host()->SetRootLayer(root_);
-        // Layers added to the tree get committed.
-        ++expected_push_properties_root_;
-        ++expected_push_properties_child_;
-        ++expected_push_properties_grandchild_;
-        ++expected_push_properties_child2_;
-        break;
-      case 2:
-        layer_tree_host()->SetNeedsCommit();
-        // No layers need commit.
-        break;
-      case 3:
-        layer_tree_host()->SetRootLayer(other_root_);
-        // Layers added to the tree get committed.
-        ++expected_push_properties_other_root_;
-        break;
-      case 4:
-        layer_tree_host()->SetRootLayer(root_);
-        // Layers added to the tree get committed.
-        ++expected_push_properties_root_;
-        ++expected_push_properties_child_;
-        ++expected_push_properties_grandchild_;
-        ++expected_push_properties_child2_;
-        break;
-      case 5:
-        layer_tree_host()->SetNeedsCommit();
-        // No layers need commit.
-        break;
-      case 6:
-        child_->RemoveFromParent();
-        // No layers need commit.
-        break;
-      case 7:
-        root_->AddChild(child_);
-        // Layers added to the tree get committed.
-        ++expected_push_properties_child_;
-        ++expected_push_properties_grandchild_;
-        break;
-      case 8:
-        grandchild_->RemoveFromParent();
-        // No layers need commit.
-        break;
-      case 9:
-        child_->AddChild(grandchild_);
-        // Layers added to the tree get committed.
-        ++expected_push_properties_grandchild_;
-        break;
-      case 10:
-        layer_tree_host()->SetViewportSize(gfx::Size(20, 20));
-        // No layers need commit.
-        break;
-      case 11:
-        layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.8f, 1.1f);
-        // No layers need commit.
-        break;
-      case 12:
-        child_->SetPosition(gfx::Point(1, 1));
-        // The modified layer needs commit
-        ++expected_push_properties_child_;
-        break;
-      case 13:
-        child2_->SetPosition(gfx::Point(1, 1));
-        // The modified layer needs commit
-        ++expected_push_properties_child2_;
-        break;
-      case 14:
-        child_->RemoveFromParent();
-        root_->AddChild(child_);
-        // Layers added to the tree get committed.
-        ++expected_push_properties_child_;
-        ++expected_push_properties_grandchild_;
-        break;
-      case 15:
-        grandchild_->SetPosition(gfx::Point(1, 1));
-        // The modified layer needs commit
-        ++expected_push_properties_grandchild_;
-        break;
-      case 16:
-        // SetNeedsDisplay does not always set needs commit (so call it
-        // explicitly), but is a property change.
-        child_->SetNeedsDisplay();
-        ++expected_push_properties_child_;
-        layer_tree_host()->SetNeedsCommit();
-        break;
-      case 17:
-        EndTest();
-        break;
-    }
-
-    // The leaf layer always pushes.
-    if (leaf_always_pushing_layer_->layer_tree_host())
-      ++expected_push_properties_leaf_layer_;
-  }
-
-  void AfterTest() override {}
-
-  int num_commits_;
-  FakeContentLayerClient client_;
-  scoped_refptr<PushPropertiesCountingLayer> root_;
-  scoped_refptr<PushPropertiesCountingLayer> child_;
-  scoped_refptr<PushPropertiesCountingLayer> child2_;
-  scoped_refptr<PushPropertiesCountingLayer> grandchild_;
-  scoped_refptr<PushPropertiesCountingLayer> other_root_;
-  scoped_refptr<PushPropertiesCountingLayer> leaf_always_pushing_layer_;
-  size_t expected_push_properties_root_;
-  size_t expected_push_properties_child_;
-  size_t expected_push_properties_child2_;
-  size_t expected_push_properties_grandchild_;
-  size_t expected_push_properties_other_root_;
-  size_t expected_push_properties_leaf_layer_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestLayersPushProperties);
-
-class LayerTreeHostTestImplLayersPushProperties
-    : public LayerTreeHostTestLayersPushProperties {
- protected:
-  void BeginTest() override {
-    expected_push_properties_root_impl_ = 0;
-    expected_push_properties_child_impl_ = 0;
-    expected_push_properties_grandchild_impl_ = 0;
-    expected_push_properties_child2_impl_ = 0;
-    expected_push_properties_grandchild2_impl_ = 0;
-    LayerTreeHostTestLayersPushProperties::BeginTest();
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    // These commits are in response to the changes made in
-    // LayerTreeHostTestLayersPushProperties::DidCommitAndDrawFrame()
-    switch (num_commits_) {
-      case 0:
-        // Tree hasn't been setup yet don't bother to check anything.
-        return;
-      case 1:
-        // Root gets set up, Everyone is initialized.
-        ++expected_push_properties_root_impl_;
-        ++expected_push_properties_child_impl_;
-        ++expected_push_properties_grandchild_impl_;
-        ++expected_push_properties_child2_impl_;
-        ++expected_push_properties_grandchild2_impl_;
-        break;
-      case 2:
-        // Tree doesn't change but the one leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild2_impl_;
-        break;
-      case 3:
-        // Root is swapped here.
-        // Clear the expected push properties the tree will be rebuilt.
-        expected_push_properties_root_impl_ = 0;
-        expected_push_properties_child_impl_ = 0;
-        expected_push_properties_grandchild_impl_ = 0;
-        expected_push_properties_child2_impl_ = 0;
-        expected_push_properties_grandchild2_impl_ = 0;
-
-        // Make sure the new root is pushed.
-        EXPECT_EQ(1u, static_cast<PushPropertiesCountingLayerImpl*>(
-                host_impl->RootLayer())->push_properties_count());
-        return;
-      case 4:
-        // Root is swapped back all of the layers in the tree get pushed.
-        ++expected_push_properties_root_impl_;
-        ++expected_push_properties_child_impl_;
-        ++expected_push_properties_grandchild_impl_;
-        ++expected_push_properties_child2_impl_;
-        ++expected_push_properties_grandchild2_impl_;
-        break;
-      case 5:
-        // Tree doesn't change but the one leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild2_impl_;
-        break;
-      case 6:
-        // First child is removed. Structure of the tree changes here so swap
-        // some of the values. child_impl becomes child2_impl.
-        expected_push_properties_child_impl_ =
-            expected_push_properties_child2_impl_;
-        expected_push_properties_child2_impl_ = 0;
-        // grandchild_impl becomes grandchild2_impl.
-        expected_push_properties_grandchild_impl_ =
-            expected_push_properties_grandchild2_impl_;
-        expected_push_properties_grandchild2_impl_ = 0;
-
-        // grandchild_impl is now the leaf that always pushes. It is pushed.
-        ++expected_push_properties_grandchild_impl_;
-        break;
-      case 7:
-        // The leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild_impl_;
-
-        // Child is added back. New layers are initialized.
-        ++expected_push_properties_grandchild2_impl_;
-        ++expected_push_properties_child2_impl_;
-        break;
-      case 8:
-        // Leaf is removed.
-        expected_push_properties_grandchild2_impl_ = 0;
-
-        // Always pushing.
-        ++expected_push_properties_grandchild_impl_;
-        break;
-      case 9:
-        // Leaf is added back
-        ++expected_push_properties_grandchild2_impl_;
-
-        // The leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild_impl_;
-        break;
-      case 10:
-        // The leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild_impl_;
-        break;
-      case 11:
-        // The leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild_impl_;
-        break;
-      case 12:
-        // The leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild_impl_;
-
-        // This child position was changed.
-        ++expected_push_properties_child2_impl_;
-        break;
-      case 13:
-        // The position of this child was changed.
-        ++expected_push_properties_child_impl_;
-
-        // The leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild_impl_;
-        break;
-      case 14:
-        // Second child is removed from tree. Don't discard counts because
-        // they are added back before commit.
-
-        // The leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild_impl_;
-
-        // Second child added back.
-        ++expected_push_properties_child2_impl_;
-        ++expected_push_properties_grandchild2_impl_;
-
-        break;
-      case 15:
-        // The position of this child was changed.
-        ++expected_push_properties_grandchild2_impl_;
-
-        // The leaf that always pushes is pushed.
-        ++expected_push_properties_grandchild_impl_;
-        break;
-      case 16:
-        // Second child is invalidated with SetNeedsDisplay
-        ++expected_push_properties_child2_impl_;
-
-        // The leaf that always pushed is pushed.
-        ++expected_push_properties_grandchild_impl_;
-        break;
-    }
-
-    PushPropertiesCountingLayerImpl* root_impl_ = NULL;
-    PushPropertiesCountingLayerImpl* child_impl_ = NULL;
-    PushPropertiesCountingLayerImpl* child2_impl_ = NULL;
-    PushPropertiesCountingLayerImpl* grandchild_impl_ = NULL;
-    PushPropertiesCountingLayerImpl* leaf_always_pushing_layer_impl_ = NULL;
-
-    // Pull the layers that we need from the tree assuming the same structure
-    // as LayerTreeHostTestLayersPushProperties
-    root_impl_ = static_cast<PushPropertiesCountingLayerImpl*>(
-        host_impl->RootLayer());
-
-    if (root_impl_ && root_impl_->children().size() > 0) {
-      child_impl_ = static_cast<PushPropertiesCountingLayerImpl*>(
-          root_impl_->children()[0]);
-
-      if (child_impl_ && child_impl_->children().size() > 0)
-        grandchild_impl_ = static_cast<PushPropertiesCountingLayerImpl*>(
-            child_impl_->children()[0]);
-    }
-
-    if (root_impl_ && root_impl_->children().size() > 1) {
-      child2_impl_ = static_cast<PushPropertiesCountingLayerImpl*>(
-          root_impl_->children()[1]);
-
-      if (child2_impl_ && child2_impl_->children().size() > 0)
-        leaf_always_pushing_layer_impl_ =
-            static_cast<PushPropertiesCountingLayerImpl*>(
-                child2_impl_->children()[0]);
-    }
-
-    if (root_impl_)
-      EXPECT_EQ(expected_push_properties_root_impl_,
-                root_impl_->push_properties_count());
-    if (child_impl_)
-      EXPECT_EQ(expected_push_properties_child_impl_,
-                child_impl_->push_properties_count());
-    if (grandchild_impl_)
-      EXPECT_EQ(expected_push_properties_grandchild_impl_,
-                grandchild_impl_->push_properties_count());
-    if (child2_impl_)
-      EXPECT_EQ(expected_push_properties_child2_impl_,
-                child2_impl_->push_properties_count());
-    if (leaf_always_pushing_layer_impl_)
-      EXPECT_EQ(expected_push_properties_grandchild2_impl_,
-                leaf_always_pushing_layer_impl_->push_properties_count());
-  }
-
-  size_t expected_push_properties_root_impl_;
-  size_t expected_push_properties_child_impl_;
-  size_t expected_push_properties_child2_impl_;
-  size_t expected_push_properties_grandchild_impl_;
-  size_t expected_push_properties_grandchild2_impl_;
-};
-
-TEST_F(LayerTreeHostTestImplLayersPushProperties, DelegatingRenderer) {
-  RunTestWithImplSidePainting();
-}
-
-class LayerTreeHostTestPropertyChangesDuringUpdateArePushed
-    : public LayerTreeHostTest {
- protected:
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void SetupTree() override {
-    root_ = Layer::Create();
-    root_->CreateRenderSurface();
-    root_->SetBounds(gfx::Size(1, 1));
-
-    bool paint_scrollbar = true;
-    bool has_thumb = false;
-    scrollbar_layer_ = FakePaintedScrollbarLayer::Create(
-        paint_scrollbar, has_thumb, root_->id());
-
-    root_->AddChild(scrollbar_layer_);
-
-    layer_tree_host()->SetRootLayer(root_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void DidCommitAndDrawFrame() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 0:
-        break;
-      case 1: {
-        // During update, the ignore_set_needs_commit_ bit is set to true to
-        // avoid causing a second commit to be scheduled. If a property change
-        // is made during this, however, it needs to be pushed in the upcoming
-        // commit.
-        scoped_ptr<base::AutoReset<bool>> ignore =
-            scrollbar_layer_->IgnoreSetNeedsCommit();
-
-        scrollbar_layer_->SetBounds(gfx::Size(30, 30));
-
-        EXPECT_TRUE(scrollbar_layer_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        layer_tree_host()->SetNeedsCommit();
-
-        scrollbar_layer_->reset_push_properties_count();
-        EXPECT_EQ(0u, scrollbar_layer_->push_properties_count());
-        break;
-      }
-      case 2:
-        EXPECT_EQ(1u, scrollbar_layer_->push_properties_count());
-        EndTest();
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
-  scoped_refptr<Layer> root_;
-  scoped_refptr<FakePaintedScrollbarLayer> scrollbar_layer_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestPropertyChangesDuringUpdateArePushed);
-
-class LayerTreeHostTestSetDrawableCausesCommit : public LayerTreeHostTest {
- protected:
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void SetupTree() override {
-    root_ = PushPropertiesCountingLayer::Create();
-    root_->CreateRenderSurface();
-    child_ = PushPropertiesCountingLayer::Create();
-    root_->AddChild(child_);
-
-    layer_tree_host()->SetRootLayer(root_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void DidCommitAndDrawFrame() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 0:
-        break;
-      case 1: {
-        // During update, the ignore_set_needs_commit_ bit is set to true to
-        // avoid causing a second commit to be scheduled. If a property change
-        // is made during this, however, it needs to be pushed in the upcoming
-        // commit.
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_EQ(0, root_->NumDescendantsThatDrawContent());
-        root_->reset_push_properties_count();
-        child_->reset_push_properties_count();
-        child_->SetDrawsContent(true);
-        EXPECT_EQ(1, root_->NumDescendantsThatDrawContent());
-        EXPECT_EQ(0u, root_->push_properties_count());
-        EXPECT_EQ(0u, child_->push_properties_count());
-        EXPECT_TRUE(root_->needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        break;
-      }
-      case 2:
-        EXPECT_EQ(1u, root_->push_properties_count());
-        EXPECT_EQ(1u, child_->push_properties_count());
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EndTest();
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
-  scoped_refptr<PushPropertiesCountingLayer> root_;
-  scoped_refptr<PushPropertiesCountingLayer> child_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestSetDrawableCausesCommit);
-
-class LayerTreeHostTestCasePushPropertiesThreeGrandChildren
-    : public LayerTreeHostTest {
- protected:
-  void BeginTest() override {
-    expected_push_properties_root_ = 0;
-    expected_push_properties_child_ = 0;
-    expected_push_properties_grandchild1_ = 0;
-    expected_push_properties_grandchild2_ = 0;
-    expected_push_properties_grandchild3_ = 0;
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void SetupTree() override {
-    root_ = PushPropertiesCountingLayer::Create();
-    root_->CreateRenderSurface();
-    child_ = PushPropertiesCountingLayer::Create();
-    grandchild1_ = PushPropertiesCountingLayer::Create();
-    grandchild2_ = PushPropertiesCountingLayer::Create();
-    grandchild3_ = PushPropertiesCountingLayer::Create();
-
-    root_->AddChild(child_);
-    child_->AddChild(grandchild1_);
-    child_->AddChild(grandchild2_);
-    child_->AddChild(grandchild3_);
-
-    // Don't set the root layer here.
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient client_;
-  scoped_refptr<PushPropertiesCountingLayer> root_;
-  scoped_refptr<PushPropertiesCountingLayer> child_;
-  scoped_refptr<PushPropertiesCountingLayer> grandchild1_;
-  scoped_refptr<PushPropertiesCountingLayer> grandchild2_;
-  scoped_refptr<PushPropertiesCountingLayer> grandchild3_;
-  size_t expected_push_properties_root_;
-  size_t expected_push_properties_child_;
-  size_t expected_push_properties_grandchild1_;
-  size_t expected_push_properties_grandchild2_;
-  size_t expected_push_properties_grandchild3_;
-};
-
-class LayerTreeHostTestPushPropertiesAddingToTreeRequiresPush
-    : public LayerTreeHostTestCasePushPropertiesThreeGrandChildren {
- protected:
-  void DidCommitAndDrawFrame() override {
-    int last_source_frame_number = layer_tree_host()->source_frame_number() - 1;
-    switch (last_source_frame_number) {
-      case 0:
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        layer_tree_host()->SetRootLayer(root_);
-
-        EXPECT_TRUE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-        break;
-      case 1:
-        EndTest();
-        break;
-    }
-  }
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestPushPropertiesAddingToTreeRequiresPush);
-
-class LayerTreeHostTestPushPropertiesRemovingChildStopsRecursion
-    : public LayerTreeHostTestCasePushPropertiesThreeGrandChildren {
- protected:
-  void DidCommitAndDrawFrame() override {
-    int last_source_frame_number = layer_tree_host()->source_frame_number() - 1;
-    switch (last_source_frame_number) {
-      case 0:
-        layer_tree_host()->SetRootLayer(root_);
-        break;
-      case 1:
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        grandchild1_->RemoveFromParent();
-        grandchild1_->SetPosition(gfx::Point(1, 1));
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        child_->AddChild(grandchild1_);
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        grandchild2_->SetPosition(gfx::Point(1, 1));
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        // grandchild2_ will still need a push properties.
-        grandchild1_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-
-        // grandchild3_ does not need a push properties, so recursing should
-        // no longer be needed.
-        grandchild2_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-        EndTest();
-        break;
-    }
-  }
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestPushPropertiesRemovingChildStopsRecursion);
-
-class LayerTreeHostTestPushPropertiesRemovingChildStopsRecursionWithPersistence
-    : public LayerTreeHostTestCasePushPropertiesThreeGrandChildren {
- protected:
-  void DidCommitAndDrawFrame() override {
-    int last_source_frame_number = layer_tree_host()->source_frame_number() - 1;
-    switch (last_source_frame_number) {
-      case 0:
-        layer_tree_host()->SetRootLayer(root_);
-        grandchild1_->set_persist_needs_push_properties(true);
-        grandchild2_->set_persist_needs_push_properties(true);
-        break;
-      case 1:
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        // grandchild2_ will still need a push properties.
-        grandchild1_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-
-        // grandchild3_ does not need a push properties, so recursing should
-        // no longer be needed.
-        grandchild2_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-        EndTest();
-        break;
-    }
-  }
-};
-
-MULTI_THREAD_TEST_F(
-    LayerTreeHostTestPushPropertiesRemovingChildStopsRecursionWithPersistence);
-
-class LayerTreeHostTestPushPropertiesSetPropertiesWhileOutsideTree
-    : public LayerTreeHostTestCasePushPropertiesThreeGrandChildren {
- protected:
-  void DidCommitAndDrawFrame() override {
-    int last_source_frame_number = layer_tree_host()->source_frame_number() - 1;
-    switch (last_source_frame_number) {
-      case 0:
-        layer_tree_host()->SetRootLayer(root_);
-        break;
-      case 1:
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        // Change grandchildren while their parent is not in the tree.
-        child_->RemoveFromParent();
-        grandchild1_->SetPosition(gfx::Point(1, 1));
-        grandchild2_->SetPosition(gfx::Point(1, 1));
-        root_->AddChild(child_);
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        grandchild1_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-
-        grandchild2_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-
-        grandchild3_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-
-        EndTest();
-        break;
-    }
-  }
-};
-
-MULTI_THREAD_TEST_F(
-    LayerTreeHostTestPushPropertiesSetPropertiesWhileOutsideTree);
-
-class LayerTreeHostTestPushPropertiesSetPropertyInParentThenChild
-    : public LayerTreeHostTestCasePushPropertiesThreeGrandChildren {
- protected:
-  void DidCommitAndDrawFrame() override {
-    int last_source_frame_number = layer_tree_host()->source_frame_number() - 1;
-    switch (last_source_frame_number) {
-      case 0:
-        layer_tree_host()->SetRootLayer(root_);
-        break;
-      case 1:
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        child_->SetPosition(gfx::Point(1, 1));
-        grandchild1_->SetPosition(gfx::Point(1, 1));
-        grandchild2_->SetPosition(gfx::Point(1, 1));
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        grandchild1_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-
-        grandchild2_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-
-        child_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-
-        EndTest();
-        break;
-    }
-  }
-};
-
-MULTI_THREAD_TEST_F(
-    LayerTreeHostTestPushPropertiesSetPropertyInParentThenChild);
-
-class LayerTreeHostTestPushPropertiesSetPropertyInChildThenParent
-    : public LayerTreeHostTestCasePushPropertiesThreeGrandChildren {
- protected:
-  void DidCommitAndDrawFrame() override {
-    int last_source_frame_number = layer_tree_host()->source_frame_number() - 1;
-    switch (last_source_frame_number) {
-      case 0:
-        layer_tree_host()->SetRootLayer(root_);
-        break;
-      case 1:
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-        EXPECT_FALSE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        grandchild1_->SetPosition(gfx::Point(1, 1));
-        grandchild2_->SetPosition(gfx::Point(1, 1));
-        child_->SetPosition(gfx::Point(1, 1));
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild1_->needs_push_properties());
-        EXPECT_FALSE(grandchild1_->descendant_needs_push_properties());
-        EXPECT_TRUE(grandchild2_->needs_push_properties());
-        EXPECT_FALSE(grandchild2_->descendant_needs_push_properties());
-        EXPECT_FALSE(grandchild3_->needs_push_properties());
-        EXPECT_FALSE(grandchild3_->descendant_needs_push_properties());
-
-        grandchild1_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_TRUE(child_->descendant_needs_push_properties());
-
-        grandchild2_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_TRUE(root_->descendant_needs_push_properties());
-        EXPECT_TRUE(child_->needs_push_properties());
-        EXPECT_FALSE(child_->descendant_needs_push_properties());
-
-        child_->RemoveFromParent();
-
-        EXPECT_FALSE(root_->needs_push_properties());
-        EXPECT_FALSE(root_->descendant_needs_push_properties());
-
-        EndTest();
-        break;
-    }
-  }
-};
-
-MULTI_THREAD_TEST_F(
-    LayerTreeHostTestPushPropertiesSetPropertyInChildThenParent);
-
-// This test verifies that the tree activation callback is invoked correctly.
-class LayerTreeHostTestTreeActivationCallback : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestTreeActivationCallback()
-      : num_commits_(0), callback_count_(0) {}
-
-  void BeginTest() override {
-    EXPECT_TRUE(HasImplThread());
-    PostSetNeedsCommitToMainThread();
-  }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    ++num_commits_;
-    switch (num_commits_) {
-      case 1:
-        EXPECT_EQ(0, callback_count_);
-        callback_count_ = 0;
-        SetCallback(true);
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 2:
-        EXPECT_EQ(1, callback_count_);
-        callback_count_ = 0;
-        SetCallback(false);
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 3:
-        EXPECT_EQ(0, callback_count_);
-        callback_count_ = 0;
-        EndTest();
-        break;
-      default:
-        ADD_FAILURE() << num_commits_;
-        EndTest();
-        break;
-    }
-    return LayerTreeHostTest::PrepareToDrawOnThread(
-        host_impl, frame_data, draw_result);
-  }
-
-  void AfterTest() override { EXPECT_EQ(3, num_commits_); }
-
-  void SetCallback(bool enable) {
-    output_surface()->SetTreeActivationCallback(
-        enable
-            ? base::Bind(
-                  &LayerTreeHostTestTreeActivationCallback::ActivationCallback,
-                  base::Unretained(this))
-            : base::Closure());
-  }
-
-  void ActivationCallback() { ++callback_count_; }
-
-  int num_commits_;
-  int callback_count_;
-};
-
-TEST_F(LayerTreeHostTestTreeActivationCallback, DirectRenderer) {
-  RunTest(true, false, true);
-}
-
-TEST_F(LayerTreeHostTestTreeActivationCallback, DelegatingRenderer) {
-  RunTest(true, true, true);
-}
-
-class LayerInvalidateCausesDraw : public LayerTreeHostTest {
- public:
-  LayerInvalidateCausesDraw() : num_commits_(0), num_draws_(0) {}
-
-  void BeginTest() override {
-    ASSERT_TRUE(!!invalidate_layer_.get())
-        << "Derived tests must set this in SetupTree";
-
-    // One initial commit.
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidCommitAndDrawFrame() override {
-    // After commit, invalidate the layer.  This should cause a commit.
-    if (layer_tree_host()->source_frame_number() == 1)
-      invalidate_layer_->SetNeedsDisplay();
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    num_draws_++;
-    if (impl->active_tree()->source_frame_number() == 1)
-      EndTest();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    num_commits_++;
-  }
-
-  void AfterTest() override {
-    EXPECT_GE(2, num_commits_);
-    EXPECT_GE(2, num_draws_);
-  }
-
- protected:
-  scoped_refptr<Layer> invalidate_layer_;
-
- private:
-  int num_commits_;
-  int num_draws_;
-};
-
-// IOSurfaceLayer must support being invalidated and then passing that along
-// to the compositor thread, even though no resources are updated in
-// response to that invalidation.
-class LayerTreeHostTestIOSurfaceLayerInvalidate
-    : public LayerInvalidateCausesDraw {
- public:
-  void SetupTree() override {
-    LayerTreeHostTest::SetupTree();
-    scoped_refptr<IOSurfaceLayer> layer = IOSurfaceLayer::Create();
-    layer->SetBounds(gfx::Size(10, 10));
-    uint32_t fake_io_surface_id = 7;
-    layer->SetIOSurfaceProperties(fake_io_surface_id, layer->bounds());
-    layer->SetIsDrawable(true);
-    layer_tree_host()->root_layer()->AddChild(layer);
-
-    invalidate_layer_ = layer;
-  }
-};
-
-// TODO(danakj): IOSurface layer can not be transported. crbug.com/239335
-SINGLE_AND_MULTI_THREAD_DIRECT_RENDERER_TEST_F(
-    LayerTreeHostTestIOSurfaceLayerInvalidate);
-
-class LayerTreeHostTestPushHiddenLayer : public LayerTreeHostTest {
- protected:
-  void SetupTree() override {
-    root_layer_ = Layer::Create();
-    root_layer_->CreateRenderSurface();
-    root_layer_->SetPosition(gfx::Point());
-    root_layer_->SetBounds(gfx::Size(10, 10));
-
-    parent_layer_ = SolidColorLayer::Create();
-    parent_layer_->SetPosition(gfx::Point());
-    parent_layer_->SetBounds(gfx::Size(10, 10));
-    parent_layer_->SetIsDrawable(true);
-    root_layer_->AddChild(parent_layer_);
-
-    child_layer_ = SolidColorLayer::Create();
-    child_layer_->SetPosition(gfx::Point());
-    child_layer_->SetBounds(gfx::Size(10, 10));
-    child_layer_->SetIsDrawable(true);
-    parent_layer_->AddChild(child_layer_);
-
-    layer_tree_host()->SetRootLayer(root_layer_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidCommitAndDrawFrame() override {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        // The layer type used does not need to push properties every frame.
-        EXPECT_FALSE(child_layer_->needs_push_properties());
-
-        // Change the bounds of the child layer, but make it skipped
-        // by CalculateDrawProperties.
-        parent_layer_->SetOpacity(0.f);
-        child_layer_->SetBounds(gfx::Size(5, 5));
-        break;
-      case 2:
-        // The bounds of the child layer were pushed to the impl side.
-        EXPECT_FALSE(child_layer_->needs_push_properties());
-
-        EndTest();
-        break;
-    }
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    LayerImpl* root = impl->active_tree()->root_layer();
-    LayerImpl* parent = root->children()[0];
-    LayerImpl* child = parent->children()[0];
-
-    switch (impl->active_tree()->source_frame_number()) {
-      case 1:
-        EXPECT_EQ(gfx::Size(5, 5).ToString(), child->bounds().ToString());
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
-  scoped_refptr<Layer> root_layer_;
-  scoped_refptr<SolidColorLayer> parent_layer_;
-  scoped_refptr<SolidColorLayer> child_layer_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestPushHiddenLayer);
-
-class LayerTreeHostTestUpdateLayerInEmptyViewport : public LayerTreeHostTest {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-  }
-
-  void SetupTree() override {
-    root_layer_ = FakePictureLayer::Create(&client_);
-    root_layer_->SetBounds(gfx::Size(10, 10));
-
-    layer_tree_host()->SetRootLayer(root_layer_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override {
-    // The viewport is empty, but we still need to update layers on the main
-    // thread.
-    layer_tree_host()->SetViewportSize(gfx::Size(0, 0));
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidCommit() override {
-    // The layer should be updated even though the viewport is empty, so we
-    // are capable of drawing it on the impl tree.
-    EXPECT_GT(root_layer_->update_count(), 0u);
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient client_;
-  scoped_refptr<FakePictureLayer> root_layer_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestUpdateLayerInEmptyViewport);
-
-class LayerTreeHostTestAbortEvictedTextures : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestAbortEvictedTextures()
-      : num_will_begin_main_frames_(0), num_impl_commits_(0) {}
-
- protected:
-  void SetupTree() override {
-    scoped_refptr<SolidColorLayer> root_layer = SolidColorLayer::Create();
-    root_layer->SetBounds(gfx::Size(200, 200));
-    root_layer->SetIsDrawable(true);
-    root_layer->CreateRenderSurface();
-
-    layer_tree_host()->SetRootLayer(root_layer);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void WillBeginMainFrame() override {
-    num_will_begin_main_frames_++;
-    switch (num_will_begin_main_frames_) {
-      case 2:
-        // Send a redraw to the compositor thread.  This will (wrongly) be
-        // ignored unless aborting resets the texture state.
-        layer_tree_host()->SetNeedsRedraw();
-        break;
-    }
-  }
-
-  void BeginCommitOnThread(LayerTreeHostImpl* impl) override {
-    num_impl_commits_++;
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    switch (impl->SourceAnimationFrameNumber()) {
-      case 1:
-        // Prevent draws until commit.
-        impl->active_tree()->SetContentsTexturesPurged();
-        EXPECT_FALSE(impl->CanDraw());
-        // Trigger an abortable commit.
-        impl->SetNeedsCommit();
-        break;
-      case 2:
-        EndTest();
-        break;
-    }
-  }
-
-  void AfterTest() override {
-    // Ensure that the commit was truly aborted.
-    EXPECT_EQ(2, num_will_begin_main_frames_);
-    EXPECT_EQ(1, num_impl_commits_);
-  }
-
- private:
-  int num_will_begin_main_frames_;
-  int num_impl_commits_;
-};
-
-// Commits can only be aborted when using the thread proxy.
-MULTI_THREAD_TEST_F(LayerTreeHostTestAbortEvictedTextures);
-
-class LayerTreeHostTestMaxTransferBufferUsageBytes : public LayerTreeHostTest {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-    settings->use_zero_copy = false;
-    settings->use_one_copy = false;
-  }
-
-  scoped_ptr<FakeOutputSurface> CreateFakeOutputSurface() override {
-    scoped_refptr<TestContextProvider> context_provider =
-        TestContextProvider::Create();
-    context_provider->SetMaxTransferBufferUsageBytes(512 * 512);
-    if (delegating_renderer())
-      return FakeOutputSurface::CreateDelegating3d(context_provider);
-    else
-      return FakeOutputSurface::Create3d(context_provider);
-  }
-
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-    scoped_refptr<FakePictureLayer> root_layer =
-        FakePictureLayer::Create(&client_);
-    root_layer->SetBounds(gfx::Size(1024, 1024));
-    root_layer->SetIsDrawable(true);
-
-    layer_tree_host()->SetRootLayer(root_layer);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    TestWebGraphicsContext3D* context = TestContext();
-
-    // Expect that the transfer buffer memory used is equal to the
-    // MaxTransferBufferUsageBytes value set in CreateOutputSurface.
-    EXPECT_EQ(512 * 512u, context->max_used_transfer_buffer_usage_bytes());
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-};
-
-// Impl-side painting is a multi-threaded compositor feature.
-MULTI_THREAD_TEST_F(LayerTreeHostTestMaxTransferBufferUsageBytes);
-
-// Test ensuring that memory limits are sent to the prioritized resource
-// manager.
-class LayerTreeHostTestMemoryLimits : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestMemoryLimits() : num_commits_(0) {}
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void WillCommit() override {
-    // Some commits are aborted, so increment number of attempted commits here.
-    num_commits_++;
-  }
-
-  void DidCommit() override {
-    switch (num_commits_) {
-      case 1:
-        // Verify default values.
-        EXPECT_EQ(PrioritizedResourceManager::DefaultMemoryAllocationLimit(),
-                  layer_tree_host()
-                      ->contents_texture_manager()
-                      ->MaxMemoryLimitBytes());
-        EXPECT_EQ(PriorityCalculator::AllowEverythingCutoff(),
-                  layer_tree_host()
-                      ->contents_texture_manager()
-                      ->ExternalPriorityCutoff());
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 2:
-        // The values should remain the same until the commit after the policy
-        // is changed.
-        EXPECT_EQ(PrioritizedResourceManager::DefaultMemoryAllocationLimit(),
-                  layer_tree_host()
-                      ->contents_texture_manager()
-                      ->MaxMemoryLimitBytes());
-        EXPECT_EQ(PriorityCalculator::AllowEverythingCutoff(),
-                  layer_tree_host()
-                      ->contents_texture_manager()
-                      ->ExternalPriorityCutoff());
-        break;
-      case 3:
-        // Verify values were correctly passed.
-        EXPECT_EQ(16u * 1024u * 1024u,
-                  layer_tree_host()
-                      ->contents_texture_manager()
-                      ->MaxMemoryLimitBytes());
-        EXPECT_EQ(PriorityCalculator::AllowVisibleAndNearbyCutoff(),
-                  layer_tree_host()
-                      ->contents_texture_manager()
-                      ->ExternalPriorityCutoff());
-        EndTest();
-        break;
-      case 4:
-        // Make sure no extra commits happen.
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    switch (num_commits_) {
-      case 1:
-        break;
-      case 2:
-        // This will trigger a commit because the priority cutoff has changed.
-        impl->SetMemoryPolicy(ManagedMemoryPolicy(
-            16u * 1024u * 1024u,
-            gpu::MemoryAllocation::CUTOFF_ALLOW_NICE_TO_HAVE,
-            1000));
-        break;
-      case 3:
-        // This will not trigger a commit because the priority cutoff has not
-        // changed, and there is already enough memory for all allocations.
-        impl->SetMemoryPolicy(ManagedMemoryPolicy(
-            32u * 1024u * 1024u,
-            gpu::MemoryAllocation::CUTOFF_ALLOW_NICE_TO_HAVE,
-            1000));
-        break;
-      case 4:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  int num_commits_;
-};
-
-SINGLE_AND_MULTI_THREAD_NOIMPL_TEST_F(LayerTreeHostTestMemoryLimits);
-
-}  // namespace
-
-class LayerTreeHostTestSetMemoryPolicyOnLostOutputSurface
-    : public LayerTreeHostTest {
- protected:
-  LayerTreeHostTestSetMemoryPolicyOnLostOutputSurface()
-      : first_output_surface_memory_limit_(4321234),
-        second_output_surface_memory_limit_(1234321) {}
-
-  scoped_ptr<FakeOutputSurface> CreateFakeOutputSurface() override {
-    if (!first_context_provider_.get()) {
-      first_context_provider_ = TestContextProvider::Create();
-    } else {
-      EXPECT_FALSE(second_context_provider_.get());
-      second_context_provider_ = TestContextProvider::Create();
-    }
-
-    scoped_refptr<TestContextProvider> provider(second_context_provider_.get()
-                                                    ? second_context_provider_
-                                                    : first_context_provider_);
-    scoped_ptr<FakeOutputSurface> output_surface;
-    if (delegating_renderer())
-      output_surface = FakeOutputSurface::CreateDelegating3d(provider);
-    else
-      output_surface = FakeOutputSurface::Create3d(provider);
-    output_surface->SetMemoryPolicyToSetAtBind(
-        make_scoped_ptr(new ManagedMemoryPolicy(
-            second_context_provider_.get() ? second_output_surface_memory_limit_
-                                           : first_output_surface_memory_limit_,
-            gpu::MemoryAllocation::CUTOFF_ALLOW_NICE_TO_HAVE,
-            ManagedMemoryPolicy::kDefaultNumResourcesLimit)));
-    return output_surface.Pass();
-  }
-
-  void SetupTree() override {
-    if (layer_tree_host()->settings().impl_side_painting)
-      root_ = FakePictureLayer::Create(&client_);
-    else
-      root_ = FakeContentLayer::Create(&client_);
-    root_->SetBounds(gfx::Size(20, 20));
-    layer_tree_host()->SetRootLayer(root_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidCommitAndDrawFrame() override {
-    // Lost context sometimes takes two frames to recreate. The third frame
-    // is sometimes aborted, so wait until the fourth frame to verify that
-    // the memory has been set, and the fifth frame to end the test.
-    if (layer_tree_host()->source_frame_number() < 5) {
-      layer_tree_host()->SetNeedsCommit();
-    } else if (layer_tree_host()->source_frame_number() == 5) {
-      EndTest();
-    }
-  }
-
-  void SwapBuffersOnThread(LayerTreeHostImpl* impl, bool result) override {
-    switch (impl->active_tree()->source_frame_number()) {
-      case 1:
-        EXPECT_EQ(first_output_surface_memory_limit_,
-                  impl->memory_allocation_limit_bytes());
-        // Lose the output surface.
-        first_context_provider_->TestContext3d()->loseContextCHROMIUM(
-            GL_GUILTY_CONTEXT_RESET_ARB, GL_INNOCENT_CONTEXT_RESET_ARB);
-        break;
-      case 4:
-        EXPECT_EQ(second_output_surface_memory_limit_,
-                  impl->memory_allocation_limit_bytes());
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
-  scoped_refptr<TestContextProvider> first_context_provider_;
-  scoped_refptr<TestContextProvider> second_context_provider_;
-  size_t first_output_surface_memory_limit_;
-  size_t second_output_surface_memory_limit_;
-  FakeContentLayerClient client_;
-  scoped_refptr<Layer> root_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(
-    LayerTreeHostTestSetMemoryPolicyOnLostOutputSurface);
-
-struct TestSwapPromiseResult {
-  TestSwapPromiseResult()
-      : did_swap_called(false),
-        did_not_swap_called(false),
-        dtor_called(false),
-        reason(SwapPromise::DID_NOT_SWAP_UNKNOWN) {}
-
-  bool did_swap_called;
-  bool did_not_swap_called;
-  bool dtor_called;
-  SwapPromise::DidNotSwapReason reason;
-  base::Lock lock;
-};
-
-class TestSwapPromise : public SwapPromise {
- public:
-  explicit TestSwapPromise(TestSwapPromiseResult* result) : result_(result) {}
-
-  ~TestSwapPromise() override {
-    base::AutoLock lock(result_->lock);
-    result_->dtor_called = true;
-  }
-
-  void DidSwap(CompositorFrameMetadata* metadata) override {
-    base::AutoLock lock(result_->lock);
-    EXPECT_FALSE(result_->did_swap_called);
-    EXPECT_FALSE(result_->did_not_swap_called);
-    result_->did_swap_called = true;
-  }
-
-  void DidNotSwap(DidNotSwapReason reason) override {
-    base::AutoLock lock(result_->lock);
-    EXPECT_FALSE(result_->did_swap_called);
-    EXPECT_FALSE(result_->did_not_swap_called);
-    result_->did_not_swap_called = true;
-    result_->reason = reason;
-  }
-
-  int64 TraceId() const override { return 0; }
-
- private:
-  // Not owned.
-  TestSwapPromiseResult* result_;
-};
-
-class LayerTreeHostTestBreakSwapPromise : public LayerTreeHostTest {
- protected:
-  LayerTreeHostTestBreakSwapPromise()
-      : commit_count_(0), commit_complete_count_(0) {}
-
-  void WillBeginMainFrame() override {
-    ASSERT_LE(commit_count_, 2);
-    scoped_ptr<SwapPromise> swap_promise(
-        new TestSwapPromise(&swap_promise_result_[commit_count_]));
-    layer_tree_host()->QueueSwapPromise(swap_promise.Pass());
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidCommit() override {
-    commit_count_++;
-    if (commit_count_ == 2) {
-      // This commit will finish.
-      layer_tree_host()->SetNeedsCommit();
-    }
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    commit_complete_count_++;
-    if (commit_complete_count_ == 1) {
-      // This commit will be aborted because no actual update.
-      PostSetNeedsUpdateLayersToMainThread();
-    } else {
-      EndTest();
-    }
-  }
-
-  void AfterTest() override {
-    // 3 commits are scheduled. 2 completes. 1 is aborted.
-    EXPECT_EQ(commit_count_, 3);
-    EXPECT_EQ(commit_complete_count_, 2);
-
-    {
-      // The first commit completes and causes swap buffer which finishes
-      // the promise.
-      base::AutoLock lock(swap_promise_result_[0].lock);
-      EXPECT_TRUE(swap_promise_result_[0].did_swap_called);
-      EXPECT_FALSE(swap_promise_result_[0].did_not_swap_called);
-      EXPECT_TRUE(swap_promise_result_[0].dtor_called);
-    }
-
-    {
-      // The second commit is aborted since it contains no updates.
-      base::AutoLock lock(swap_promise_result_[1].lock);
-      EXPECT_FALSE(swap_promise_result_[1].did_swap_called);
-      EXPECT_TRUE(swap_promise_result_[1].did_not_swap_called);
-      EXPECT_EQ(SwapPromise::COMMIT_NO_UPDATE, swap_promise_result_[1].reason);
-      EXPECT_TRUE(swap_promise_result_[1].dtor_called);
-    }
-
-    {
-      // The last commit completes but it does not cause swap buffer because
-      // there is no damage in the frame data.
-      base::AutoLock lock(swap_promise_result_[2].lock);
-      EXPECT_FALSE(swap_promise_result_[2].did_swap_called);
-      EXPECT_TRUE(swap_promise_result_[2].did_not_swap_called);
-      EXPECT_EQ(SwapPromise::SWAP_FAILS, swap_promise_result_[2].reason);
-      EXPECT_TRUE(swap_promise_result_[2].dtor_called);
-    }
-  }
-
-  int commit_count_;
-  int commit_complete_count_;
-  TestSwapPromiseResult swap_promise_result_[3];
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestBreakSwapPromise);
-
-class LayerTreeHostTestKeepSwapPromise : public LayerTreeTest {
- public:
-  LayerTreeHostTestKeepSwapPromise() {}
-
-  void BeginTest() override {
-    layer_ = SolidColorLayer::Create();
-    layer_->SetIsDrawable(true);
-    layer_->SetBounds(gfx::Size(10, 10));
-    layer_tree_host()->SetRootLayer(layer_);
-    gfx::Size bounds(100, 100);
-    layer_tree_host()->SetViewportSize(bounds);
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidCommit() override {
-    MainThreadTaskRunner()->PostTask(
-        FROM_HERE, base::Bind(&LayerTreeHostTestKeepSwapPromise::ChangeFrame,
-                              base::Unretained(this)));
-  }
-
-  void ChangeFrame() {
-    switch (layer_tree_host()->source_frame_number()) {
-      case 1:
-        layer_->SetBounds(gfx::Size(10, 11));
-        layer_tree_host()->QueueSwapPromise(
-            make_scoped_ptr(new TestSwapPromise(&swap_promise_result_)));
-        break;
-      case 2:
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void SwapBuffersOnThread(LayerTreeHostImpl* host_impl, bool result) override {
-    EXPECT_TRUE(result);
-    if (host_impl->active_tree()->source_frame_number() >= 1) {
-      // The commit changes layers so it should cause a swap.
-      base::AutoLock lock(swap_promise_result_.lock);
-      EXPECT_TRUE(swap_promise_result_.did_swap_called);
-      EXPECT_FALSE(swap_promise_result_.did_not_swap_called);
-      EXPECT_TRUE(swap_promise_result_.dtor_called);
-      EndTest();
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  scoped_refptr<Layer> layer_;
-  TestSwapPromiseResult swap_promise_result_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestKeepSwapPromise);
-
-class LayerTreeHostTestBreakSwapPromiseForVisibility
-    : public LayerTreeHostTest {
- protected:
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void SetVisibleFalseAndQueueSwapPromise() {
-    layer_tree_host()->SetVisible(false);
-    scoped_ptr<SwapPromise> swap_promise(
-        new TestSwapPromise(&swap_promise_result_));
-    layer_tree_host()->QueueSwapPromise(swap_promise.Pass());
-  }
-
-  void ScheduledActionWillSendBeginMainFrame() override {
-    MainThreadTaskRunner()->PostTask(
-        FROM_HERE,
-        base::Bind(&LayerTreeHostTestBreakSwapPromiseForVisibility
-                       ::SetVisibleFalseAndQueueSwapPromise,
-            base::Unretained(this)));
-  }
-
-  void BeginMainFrameAbortedOnThread(LayerTreeHostImpl* host_impl,
-                                     CommitEarlyOutReason reason) override {
-    EndTest();
-  }
-
-  void AfterTest() override {
-    {
-      base::AutoLock lock(swap_promise_result_.lock);
-      EXPECT_FALSE(swap_promise_result_.did_swap_called);
-      EXPECT_TRUE(swap_promise_result_.did_not_swap_called);
-      EXPECT_EQ(SwapPromise::COMMIT_FAILS, swap_promise_result_.reason);
-      EXPECT_TRUE(swap_promise_result_.dtor_called);
-    }
-  }
-
-  TestSwapPromiseResult swap_promise_result_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestBreakSwapPromiseForVisibility);
-
-class LayerTreeHostTestBreakSwapPromiseForContext : public LayerTreeHostTest {
- protected:
-  LayerTreeHostTestBreakSwapPromiseForContext()
-      : output_surface_lost_triggered_(false) {
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void LoseOutputSurfaceAndQueueSwapPromise() {
-    layer_tree_host()->DidLoseOutputSurface();
-    scoped_ptr<SwapPromise> swap_promise(
-        new TestSwapPromise(&swap_promise_result_));
-    layer_tree_host()->QueueSwapPromise(swap_promise.Pass());
-  }
-
-  void ScheduledActionWillSendBeginMainFrame() override {
-    if (output_surface_lost_triggered_)
-      return;
-    output_surface_lost_triggered_ = true;
-
-    MainThreadTaskRunner()->PostTask(
-        FROM_HERE,
-        base::Bind(&LayerTreeHostTestBreakSwapPromiseForContext
-                       ::LoseOutputSurfaceAndQueueSwapPromise,
-                   base::Unretained(this)));
-  }
-
-  void BeginMainFrameAbortedOnThread(LayerTreeHostImpl* host_impl,
-                                     CommitEarlyOutReason reason) override {
-    // This is needed so that the impl-thread state matches main-thread state.
-    host_impl->DidLoseOutputSurface();
-    EndTest();
-  }
-
-  void AfterTest() override {
-    {
-      base::AutoLock lock(swap_promise_result_.lock);
-      EXPECT_FALSE(swap_promise_result_.did_swap_called);
-      EXPECT_TRUE(swap_promise_result_.did_not_swap_called);
-      EXPECT_EQ(SwapPromise::COMMIT_FAILS, swap_promise_result_.reason);
-      EXPECT_TRUE(swap_promise_result_.dtor_called);
-    }
-  }
-
-  bool output_surface_lost_triggered_;
-  TestSwapPromiseResult swap_promise_result_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(
-    LayerTreeHostTestBreakSwapPromiseForContext);
-
-class SimpleSwapPromiseMonitor : public SwapPromiseMonitor {
- public:
-  SimpleSwapPromiseMonitor(LayerTreeHost* layer_tree_host,
-                           LayerTreeHostImpl* layer_tree_host_impl,
-                           int* set_needs_commit_count,
-                           int* set_needs_redraw_count)
-      : SwapPromiseMonitor(layer_tree_host, layer_tree_host_impl),
-        set_needs_commit_count_(set_needs_commit_count) {}
-
-  ~SimpleSwapPromiseMonitor() override {}
-
-  void OnSetNeedsCommitOnMain() override { (*set_needs_commit_count_)++; }
-
-  void OnSetNeedsRedrawOnImpl() override {
-    ADD_FAILURE() << "Should not get called on main thread.";
-  }
-
-  void OnForwardScrollUpdateToMainThreadOnImpl() override {
-    ADD_FAILURE() << "Should not get called on main thread.";
-  }
-
- private:
-  int* set_needs_commit_count_;
-};
-
-class LayerTreeHostTestSimpleSwapPromiseMonitor : public LayerTreeHostTest {
- public:
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void WillBeginMainFrame() override {
-    if (TestEnded())
-      return;
-
-    int set_needs_commit_count = 0;
-    int set_needs_redraw_count = 0;
-
-    {
-      scoped_ptr<SimpleSwapPromiseMonitor> swap_promise_monitor(
-          new SimpleSwapPromiseMonitor(layer_tree_host(),
-                                       NULL,
-                                       &set_needs_commit_count,
-                                       &set_needs_redraw_count));
-      layer_tree_host()->SetNeedsCommit();
-      EXPECT_EQ(1, set_needs_commit_count);
-      EXPECT_EQ(0, set_needs_redraw_count);
-    }
-
-    // Now the monitor is destroyed, SetNeedsCommit() is no longer being
-    // monitored.
-    layer_tree_host()->SetNeedsCommit();
-    EXPECT_EQ(1, set_needs_commit_count);
-    EXPECT_EQ(0, set_needs_redraw_count);
-
-    {
-      scoped_ptr<SimpleSwapPromiseMonitor> swap_promise_monitor(
-          new SimpleSwapPromiseMonitor(layer_tree_host(),
-                                       NULL,
-                                       &set_needs_commit_count,
-                                       &set_needs_redraw_count));
-      layer_tree_host()->SetNeedsUpdateLayers();
-      EXPECT_EQ(2, set_needs_commit_count);
-      EXPECT_EQ(0, set_needs_redraw_count);
-    }
-
-    {
-      scoped_ptr<SimpleSwapPromiseMonitor> swap_promise_monitor(
-          new SimpleSwapPromiseMonitor(layer_tree_host(),
-                                       NULL,
-                                       &set_needs_commit_count,
-                                       &set_needs_redraw_count));
-      layer_tree_host()->SetNeedsAnimate();
-      EXPECT_EQ(3, set_needs_commit_count);
-      EXPECT_EQ(0, set_needs_redraw_count);
-    }
-
-    EndTest();
-  }
-
-  void AfterTest() override {}
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestSimpleSwapPromiseMonitor);
-
-class LayerTreeHostTestHighResRequiredAfterEvictingUIResources
-    : public LayerTreeHostTest {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-  }
-
-  void SetupTree() override {
-    LayerTreeHostTest::SetupTree();
-    ui_resource_ = FakeScopedUIResource::Create(layer_tree_host());
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    host_impl->EvictAllUIResources();
-    // Existence of evicted UI resources will trigger NEW_CONTENT_TAKES_PRIORITY
-    // mode. Active tree should require high-res to draw after entering this
-    // mode to ensure that high-res tiles are also required for a pending tree
-    // to be activated.
-    EXPECT_TRUE(host_impl->RequiresHighResToDraw());
-  }
-
-  void DidCommit() override {
-    int frame = layer_tree_host()->source_frame_number();
-    switch (frame) {
-      case 1:
-        PostSetNeedsCommitToMainThread();
-        break;
-      case 2:
-        ui_resource_ = nullptr;
-        EndTest();
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient client_;
-  scoped_ptr<FakeScopedUIResource> ui_resource_;
-};
-
-// This test is flaky, see http://crbug.com/386199
-// MULTI_THREAD_TEST_F(LayerTreeHostTestHighResRequiredAfterEvictingUIResources)
-
-class LayerTreeHostTestGpuRasterizationDefault : public LayerTreeHostTest {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-
-    EXPECT_FALSE(settings->gpu_rasterization_enabled);
-    EXPECT_FALSE(settings->gpu_rasterization_forced);
-  }
-
-  void SetupTree() override {
-    LayerTreeHostTest::SetupTree();
-
-    scoped_refptr<PictureLayer> layer = PictureLayer::Create(&layer_client_);
-    layer->SetBounds(gfx::Size(10, 10));
-    layer->SetIsDrawable(true);
-    layer_tree_host()->root_layer()->AddChild(layer);
-  }
-
-  void BeginTest() override {
-    Layer* root = layer_tree_host()->root_layer();
-    PictureLayer* layer = static_cast<PictureLayer*>(root->child_at(0));
-    RecordingSource* recording_source = layer->GetRecordingSourceForTesting();
-
-    // Verify default values.
-    EXPECT_TRUE(root->IsSuitableForGpuRasterization());
-    EXPECT_TRUE(layer->IsSuitableForGpuRasterization());
-    EXPECT_TRUE(recording_source->IsSuitableForGpuRasterization());
-    EXPECT_FALSE(layer_tree_host()->has_gpu_rasterization_trigger());
-    EXPECT_FALSE(layer_tree_host()->UseGpuRasterization());
-
-    // Setting gpu rasterization trigger does not enable gpu rasterization.
-    layer_tree_host()->SetHasGpuRasterizationTrigger(true);
-    EXPECT_TRUE(layer_tree_host()->has_gpu_rasterization_trigger());
-    EXPECT_FALSE(layer_tree_host()->UseGpuRasterization());
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    EXPECT_FALSE(host_impl->pending_tree()->use_gpu_rasterization());
-    EXPECT_FALSE(host_impl->use_gpu_rasterization());
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    EXPECT_FALSE(host_impl->active_tree()->use_gpu_rasterization());
-    EXPECT_FALSE(host_impl->use_gpu_rasterization());
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient layer_client_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestGpuRasterizationDefault);
-
-class LayerTreeHostTestGpuRasterizationEnabled : public LayerTreeHostTest {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-
-    EXPECT_FALSE(settings->gpu_rasterization_enabled);
-    settings->gpu_rasterization_enabled = true;
-  }
-
-  void SetupTree() override {
-    LayerTreeHostTest::SetupTree();
-
-    scoped_refptr<PictureLayer> layer = PictureLayer::Create(&layer_client_);
-    layer->SetBounds(gfx::Size(10, 10));
-    layer->SetIsDrawable(true);
-    layer_tree_host()->root_layer()->AddChild(layer);
-  }
-
-  void BeginTest() override {
-    Layer* root = layer_tree_host()->root_layer();
-    PictureLayer* layer = static_cast<PictureLayer*>(root->child_at(0));
-    RecordingSource* recording_source = layer->GetRecordingSourceForTesting();
-
-    // Verify default values.
-    EXPECT_TRUE(root->IsSuitableForGpuRasterization());
-    EXPECT_TRUE(layer->IsSuitableForGpuRasterization());
-    EXPECT_TRUE(recording_source->IsSuitableForGpuRasterization());
-    EXPECT_FALSE(layer_tree_host()->has_gpu_rasterization_trigger());
-    EXPECT_FALSE(layer_tree_host()->UseGpuRasterization());
-
-    // Gpu rasterization trigger is relevant.
-    layer_tree_host()->SetHasGpuRasterizationTrigger(true);
-    EXPECT_TRUE(layer_tree_host()->has_gpu_rasterization_trigger());
-    EXPECT_TRUE(layer_tree_host()->UseGpuRasterization());
-
-    // Content-based veto is relevant as well.
-    recording_source->SetUnsuitableForGpuRasterizationForTesting();
-    EXPECT_FALSE(recording_source->IsSuitableForGpuRasterization());
-    EXPECT_FALSE(layer->IsSuitableForGpuRasterization());
-    // Veto will take effect when layers are updated.
-    // The results will be verified after commit is completed below.
-    // Since we are manually marking picture pile as unsuitable,
-    // make sure that the layer gets a chance to update.
-    layer->SetNeedsDisplay();
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    EXPECT_FALSE(host_impl->pending_tree()->use_gpu_rasterization());
-    EXPECT_FALSE(host_impl->use_gpu_rasterization());
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    EXPECT_FALSE(host_impl->active_tree()->use_gpu_rasterization());
-    EXPECT_FALSE(host_impl->use_gpu_rasterization());
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient layer_client_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestGpuRasterizationEnabled);
-
-class LayerTreeHostTestGpuRasterizationForced : public LayerTreeHostTest {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    ASSERT_TRUE(settings->impl_side_painting);
-
-    EXPECT_FALSE(settings->gpu_rasterization_forced);
-    settings->gpu_rasterization_forced = true;
-  }
-
-  void SetupTree() override {
-    LayerTreeHostTest::SetupTree();
-
-    scoped_refptr<FakePictureLayer> layer =
-        FakePictureLayer::Create(&layer_client_);
-    layer->SetBounds(gfx::Size(10, 10));
-    layer->SetIsDrawable(true);
-    layer_tree_host()->root_layer()->AddChild(layer);
-  }
-
-  void BeginTest() override {
-    Layer* root = layer_tree_host()->root_layer();
-    PictureLayer* layer = static_cast<PictureLayer*>(root->child_at(0));
-    RecordingSource* recording_source = layer->GetRecordingSourceForTesting();
-
-    // Verify default values.
-    EXPECT_TRUE(root->IsSuitableForGpuRasterization());
-    EXPECT_TRUE(layer->IsSuitableForGpuRasterization());
-    EXPECT_TRUE(recording_source->IsSuitableForGpuRasterization());
-    EXPECT_FALSE(layer_tree_host()->has_gpu_rasterization_trigger());
-
-    // With gpu rasterization forced, gpu rasterization trigger is irrelevant.
-    EXPECT_TRUE(layer_tree_host()->UseGpuRasterization());
-    layer_tree_host()->SetHasGpuRasterizationTrigger(true);
-    EXPECT_TRUE(layer_tree_host()->has_gpu_rasterization_trigger());
-    EXPECT_TRUE(layer_tree_host()->UseGpuRasterization());
-
-    // Content-based veto is irrelevant as well.
-    recording_source->SetUnsuitableForGpuRasterizationForTesting();
-    EXPECT_FALSE(recording_source->IsSuitableForGpuRasterization());
-    EXPECT_FALSE(layer->IsSuitableForGpuRasterization());
-    // Veto will take effect when layers are updated.
-    // The results will be verified after commit is completed below.
-    // Since we are manually marking picture pile as unsuitable,
-    // make sure that the layer gets a chance to update.
-    layer->SetNeedsDisplay();
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    EXPECT_TRUE(host_impl->sync_tree()->use_gpu_rasterization());
-    EXPECT_TRUE(host_impl->use_gpu_rasterization());
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    EXPECT_TRUE(host_impl->active_tree()->use_gpu_rasterization());
-    EXPECT_TRUE(host_impl->use_gpu_rasterization());
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient layer_client_;
-};
-
-SINGLE_AND_MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestGpuRasterizationForced);
-
-class LayerTreeHostTestContinuousPainting : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestContinuousPainting()
-      : num_commits_(0), num_draws_(0), bounds_(20, 20), child_layer_(NULL) {}
-
- protected:
-  enum { kExpectedNumCommits = 10 };
-
-  void SetupTree() override {
-    scoped_refptr<Layer> root_layer = Layer::Create();
-    root_layer->SetBounds(bounds_);
-    root_layer->CreateRenderSurface();
-
-    if (layer_tree_host()->settings().impl_side_painting) {
-      picture_layer_ = FakePictureLayer::Create(&client_);
-      child_layer_ = picture_layer_.get();
-    } else {
-      content_layer_ = ContentLayerWithUpdateTracking::Create(&client_);
-      child_layer_ = content_layer_.get();
-    }
-    child_layer_->SetBounds(bounds_);
-    child_layer_->SetIsDrawable(true);
-    root_layer->AddChild(child_layer_);
-
-    layer_tree_host()->SetRootLayer(root_layer);
-    layer_tree_host()->SetViewportSize(bounds_);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override {
-    MainThreadTaskRunner()->PostTask(
-        FROM_HERE,
-        base::Bind(
-            &LayerTreeHostTestContinuousPainting::EnableContinuousPainting,
-            base::Unretained(this)));
-    // Wait 50x longer than expected.
-    double milliseconds_per_frame =
-        1000.0 / layer_tree_host()->settings().renderer_settings.refresh_rate;
-    MainThreadTaskRunner()->PostDelayedTask(
-        FROM_HERE,
-        base::Bind(
-            &LayerTreeHostTestContinuousPainting::DisableContinuousPainting,
-            base::Unretained(this)),
-        base::TimeDelta::FromMilliseconds(50 * kExpectedNumCommits *
-                                          milliseconds_per_frame));
-  }
-
-  void BeginMainFrame(const BeginFrameArgs& args) override {
-    child_layer_->SetNeedsDisplay();
-  }
-
-  void AfterTest() override {
-    EXPECT_LE(kExpectedNumCommits, num_commits_);
-    EXPECT_LE(kExpectedNumCommits, num_draws_);
-    int update_count = content_layer_.get()
-                           ? content_layer_->PaintContentsCount()
-                           : picture_layer_->update_count();
-    EXPECT_LE(kExpectedNumCommits, update_count);
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    if (++num_draws_ == kExpectedNumCommits)
-      EndTest();
-  }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    ++num_commits_;
-  }
-
- private:
-  void EnableContinuousPainting() {
-    LayerTreeDebugState debug_state = layer_tree_host()->debug_state();
-    debug_state.continuous_painting = true;
-    layer_tree_host()->SetDebugState(debug_state);
-  }
-
-  void DisableContinuousPainting() {
-    LayerTreeDebugState debug_state = layer_tree_host()->debug_state();
-    debug_state.continuous_painting = false;
-    layer_tree_host()->SetDebugState(debug_state);
-    EndTest();
-  }
-
-  int num_commits_;
-  int num_draws_;
-  const gfx::Size bounds_;
-  FakeContentLayerClient client_;
-  scoped_refptr<ContentLayerWithUpdateTracking> content_layer_;
-  scoped_refptr<FakePictureLayer> picture_layer_;
-  Layer* child_layer_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestContinuousPainting);
-
-class LayerTreeHostTestSendBeginFramesToChildren : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSendBeginFramesToChildren()
-      : begin_frame_sent_to_children_(false) {
-  }
-
-  void BeginTest() override {
-    // Kick off the test with a commit.
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void SendBeginFramesToChildren(const BeginFrameArgs& args) override {
-    begin_frame_sent_to_children_ = true;
-    EndTest();
-  }
-
-  void DidBeginMainFrame() override {
-    // Children requested BeginFrames.
-    layer_tree_host()->SetChildrenNeedBeginFrames(true);
-  }
-
-  void AfterTest() override {
-    // Ensure that BeginFrame message is sent to children during parent
-    // scheduler handles its BeginFrame.
-    EXPECT_TRUE(begin_frame_sent_to_children_);
-  }
-
- private:
-  bool begin_frame_sent_to_children_;
-};
-
-SINGLE_THREAD_TEST_F(LayerTreeHostTestSendBeginFramesToChildren);
-
-class LayerTreeHostTestSendBeginFramesToChildrenWithExternalBFS
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSendBeginFramesToChildrenWithExternalBFS()
-      : begin_frame_sent_to_children_(false) {
-  }
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->use_external_begin_frame_source = true;
-  }
-
-  void BeginTest() override {
-    // Kick off the test with a commit.
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void SendBeginFramesToChildren(const BeginFrameArgs& args) override {
-    begin_frame_sent_to_children_ = true;
-    EndTest();
-  }
-
-  void DidBeginMainFrame() override {
-    // Children requested BeginFrames.
-    layer_tree_host()->SetChildrenNeedBeginFrames(true);
-  }
-
-  void AfterTest() override {
-    // Ensure that BeginFrame message is sent to children during parent
-    // scheduler handles its BeginFrame.
-    EXPECT_TRUE(begin_frame_sent_to_children_);
-  }
-
- private:
-  bool begin_frame_sent_to_children_;
-};
-
-SINGLE_THREAD_TEST_F(LayerTreeHostTestSendBeginFramesToChildrenWithExternalBFS);
-
-class LayerTreeHostTestActivateOnInvisible : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestActivateOnInvisible()
-      : activation_count_(0), visible_(true) {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-  }
-
-  void BeginTest() override {
-    // Kick off the test with a commit.
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void BeginCommitOnThread(LayerTreeHostImpl* host_impl) override {
-    // Make sure we don't activate using the notify signal from tile manager.
-    host_impl->BlockNotifyReadyToActivateForTesting(true);
-  }
-
-  void DidCommit() override { layer_tree_host()->SetVisible(false); }
-
-  void DidSetVisibleOnImplTree(LayerTreeHostImpl* host_impl,
-                               bool visible) override {
-    visible_ = visible;
-
-    // Once invisible, we can go visible again.
-    if (!visible) {
-      PostSetVisibleToMainThread(true);
-    } else {
-      EXPECT_TRUE(host_impl->RequiresHighResToDraw());
-      EndTest();
-    }
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    ++activation_count_;
-    EXPECT_FALSE(visible_);
-  }
-
-  void AfterTest() override {
-    // Ensure we activated even though the signal was blocked.
-    EXPECT_EQ(1, activation_count_);
-    EXPECT_TRUE(visible_);
-  }
-
- private:
-  int activation_count_;
-  bool visible_;
-
-  FakeContentLayerClient client_;
-  scoped_refptr<FakePictureLayer> picture_layer_;
-};
-
-// TODO(vmpstr): Enable with single thread impl-side painting.
-MULTI_THREAD_TEST_F(LayerTreeHostTestActivateOnInvisible);
-
-// Do a synchronous composite and assert that the swap promise succeeds.
-class LayerTreeHostTestSynchronousCompositeSwapPromise
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestSynchronousCompositeSwapPromise() : commit_count_(0) {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->single_thread_proxy_scheduler = false;
-  }
-
-  void BeginTest() override {
-    // Successful composite.
-    scoped_ptr<SwapPromise> swap_promise0(
-        new TestSwapPromise(&swap_promise_result_[0]));
-    layer_tree_host()->QueueSwapPromise(swap_promise0.Pass());
-    layer_tree_host()->Composite(gfx::FrameTime::Now());
-
-    // Fail to swap (no damage).
-    scoped_ptr<SwapPromise> swap_promise1(
-        new TestSwapPromise(&swap_promise_result_[1]));
-    layer_tree_host()->QueueSwapPromise(swap_promise1.Pass());
-    layer_tree_host()->SetNeedsCommit();
-    layer_tree_host()->Composite(gfx::FrameTime::Now());
-
-    // Fail to draw (not visible).
-    scoped_ptr<SwapPromise> swap_promise2(
-        new TestSwapPromise(&swap_promise_result_[2]));
-    layer_tree_host()->QueueSwapPromise(swap_promise2.Pass());
-    layer_tree_host()->SetNeedsDisplayOnAllLayers();
-    layer_tree_host()->SetVisible(false);
-    layer_tree_host()->Composite(gfx::FrameTime::Now());
-
-    EndTest();
-  }
-
-  void DidCommit() override {
-    commit_count_++;
-    ASSERT_LE(commit_count_, 3);
-  }
-
-  void AfterTest() override {
-    EXPECT_EQ(3, commit_count_);
-
-    // Initial swap promise should have succeded.
-    {
-      base::AutoLock lock(swap_promise_result_[0].lock);
-      EXPECT_TRUE(swap_promise_result_[0].did_swap_called);
-      EXPECT_FALSE(swap_promise_result_[0].did_not_swap_called);
-      EXPECT_TRUE(swap_promise_result_[0].dtor_called);
-    }
-
-    // Second swap promise fails to swap.
-    {
-      base::AutoLock lock(swap_promise_result_[1].lock);
-      EXPECT_FALSE(swap_promise_result_[1].did_swap_called);
-      EXPECT_TRUE(swap_promise_result_[1].did_not_swap_called);
-      EXPECT_EQ(SwapPromise::SWAP_FAILS, swap_promise_result_[1].reason);
-      EXPECT_TRUE(swap_promise_result_[1].dtor_called);
-    }
-
-    // Third swap promises also fails to swap (and draw).
-    {
-      base::AutoLock lock(swap_promise_result_[2].lock);
-      EXPECT_FALSE(swap_promise_result_[2].did_swap_called);
-      EXPECT_TRUE(swap_promise_result_[2].did_not_swap_called);
-      EXPECT_EQ(SwapPromise::SWAP_FAILS, swap_promise_result_[2].reason);
-      EXPECT_TRUE(swap_promise_result_[2].dtor_called);
-    }
-  }
-
-  int commit_count_;
-  TestSwapPromiseResult swap_promise_result_[3];
-};
-
-// Impl-side painting is not supported for synchronous compositing.
-SINGLE_THREAD_NOIMPL_TEST_F(LayerTreeHostTestSynchronousCompositeSwapPromise);
-
-// Make sure page scale and top control deltas are applied to the client even
-// when the LayerTreeHost doesn't have a root layer.
-class LayerTreeHostAcceptsDeltasFromImplWithoutRootLayer
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostAcceptsDeltasFromImplWithoutRootLayer()
-      : deltas_sent_to_client_(false) {}
-
-  void BeginTest() override {
-    layer_tree_host()->SetRootLayer(nullptr);
-    info_.page_scale_delta = 3.14f;
-    info_.top_controls_delta = 2.73f;
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void BeginMainFrame(const BeginFrameArgs& args) override {
-    EXPECT_EQ(nullptr, layer_tree_host()->root_layer());
-
-    layer_tree_host()->ApplyScrollAndScale(&info_);
-    EndTest();
-  }
-
-  void ApplyViewportDeltas(const gfx::Vector2dF& inner,
-                           const gfx::Vector2dF& outer,
-                           const gfx::Vector2dF& elastic_overscroll_delta,
-                           float scale_delta,
-                           float top_controls_delta) override {
-    EXPECT_EQ(info_.page_scale_delta, scale_delta);
-    EXPECT_EQ(info_.top_controls_delta, top_controls_delta);
-    deltas_sent_to_client_ = true;
-  }
-
-  void ApplyViewportDeltas(
-      const gfx::Vector2d& scroll,
-      float scale_delta,
-      float top_controls_delta) override {
-    EXPECT_EQ(info_.page_scale_delta, scale_delta);
-    EXPECT_EQ(info_.top_controls_delta, top_controls_delta);
-    deltas_sent_to_client_ = true;
-  }
-
-  void AfterTest() override {
-    EXPECT_TRUE(deltas_sent_to_client_);
-  }
-
-  ScrollAndScaleSet info_;
-  bool deltas_sent_to_client_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostAcceptsDeltasFromImplWithoutRootLayer);
-
-class LayerTreeHostTestCrispUpAfterPinchEnds : public LayerTreeHostTest {
- protected:
-  LayerTreeHostTestCrispUpAfterPinchEnds()
-      : playback_allowed_event_(true, true) {}
-
-  void SetupTree() override {
-    frame_ = 1;
-    posted_ = false;
-    client_.set_fill_with_nonsolid_color(true);
-
-    scoped_refptr<Layer> root = Layer::Create();
-    root->SetBounds(gfx::Size(500, 500));
-
-    scoped_refptr<Layer> pinch = Layer::Create();
-    pinch->SetBounds(gfx::Size(500, 500));
-    pinch->SetScrollClipLayerId(root->id());
-    pinch->SetIsContainerForFixedPositionLayers(true);
-    root->AddChild(pinch);
-
-    scoped_ptr<FakePicturePile> pile(
-        new FakePicturePile(ImplSidePaintingSettings().minimum_contents_scale,
-                            ImplSidePaintingSettings().default_tile_grid_size));
-    pile->SetPlaybackAllowedEvent(&playback_allowed_event_);
-    scoped_refptr<FakePictureLayer> layer =
-        FakePictureLayer::CreateWithRecordingSource(&client_, pile.Pass());
-    layer->SetBounds(gfx::Size(500, 500));
-    layer->SetContentsOpaque(true);
-    // Avoid LCD text on the layer so we don't cause extra commits when we
-    // pinch.
-    layer->disable_lcd_text();
-    pinch->AddChild(layer);
-
-    layer_tree_host()->RegisterViewportLayers(NULL, root, pinch, pinch);
-    layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 1.f, 4.f);
-    layer_tree_host()->SetRootLayer(root);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  // Returns the delta scale of all quads in the frame's root pass from their
-  // ideal, or 0 if they are not all the same.
-  float FrameQuadScaleDeltaFromIdeal(LayerTreeHostImpl::FrameData* frame_data) {
-    if (frame_data->has_no_damage)
-      return 0.f;
-    float frame_scale = 0.f;
-    RenderPass* root_pass = frame_data->render_passes.back();
-    for (const auto& draw_quad : root_pass->quad_list) {
-      // Checkerboards mean an incomplete frame.
-      if (draw_quad->material != DrawQuad::TILED_CONTENT)
-        return 0.f;
-      const TileDrawQuad* quad = TileDrawQuad::MaterialCast(draw_quad);
-      float quad_scale =
-          quad->tex_coord_rect.width() / static_cast<float>(quad->rect.width());
-      float transform_scale =
-          SkMScalarToFloat(quad->quadTransform().matrix().get(0, 0));
-      float scale = quad_scale / transform_scale;
-      if (frame_scale != 0.f && frame_scale != scale)
-        return 0.f;
-      frame_scale = scale;
-    }
-    return frame_scale;
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    float quad_scale_delta = FrameQuadScaleDeltaFromIdeal(frame_data);
-    switch (frame_) {
-      case 1:
-        // Drew at page scale 1 before any pinching.
-        EXPECT_EQ(1.f, host_impl->active_tree()->current_page_scale_factor());
-        EXPECT_EQ(1.f, quad_scale_delta);
-        PostNextAfterDraw(host_impl);
-        break;
-      case 2:
-        if (quad_scale_delta != 1.f)
-          break;
-        // Drew at page scale 1.5 after pinching in.
-        EXPECT_EQ(1.5f, host_impl->active_tree()->current_page_scale_factor());
-        EXPECT_EQ(1.f, quad_scale_delta);
-        PostNextAfterDraw(host_impl);
-        break;
-      case 3:
-        // By pinching out, we will create a new tiling and raster it. This may
-        // cause some additional draws, though we should still be drawing with
-        // the old 1.5 tiling.
-        if (frame_data->has_no_damage)
-          break;
-        // Drew at page scale 1 with the 1.5 tiling while pinching out.
-        EXPECT_EQ(1.f, host_impl->active_tree()->current_page_scale_factor());
-        EXPECT_EQ(1.5f, quad_scale_delta);
-        // We don't PostNextAfterDraw here, instead we wait for the new tiling
-        // to finish rastering so we don't get any noise in further steps.
-        break;
-      case 4:
-        // Drew at page scale 1 with the 1.5 tiling after pinching out completed
-        // while waiting for texture uploads to complete.
-        EXPECT_EQ(1.f, host_impl->active_tree()->current_page_scale_factor());
-        // This frame will not have any damage, since it's actually the same as
-        // the last frame, and should contain no incomplete tiles. We just want
-        // to make sure we drew here at least once after the pinch ended to be
-        // sure that drawing after pinch doesn't leave us at the wrong scale
-        EXPECT_TRUE(frame_data->has_no_damage);
-        PostNextAfterDraw(host_impl);
-        break;
-      case 5:
-        if (quad_scale_delta != 1.f)
-          break;
-        // Drew at scale 1 after texture uploads are done.
-        EXPECT_EQ(1.f, host_impl->active_tree()->current_page_scale_factor());
-        EXPECT_EQ(1.f, quad_scale_delta);
-        EndTest();
-        break;
-    }
-    return draw_result;
-  }
-
-  void PostNextAfterDraw(LayerTreeHostImpl* host_impl) {
-    if (posted_)
-      return;
-    posted_ = true;
-    ImplThreadTaskRunner()->PostDelayedTask(
-        FROM_HERE, base::Bind(&LayerTreeHostTestCrispUpAfterPinchEnds::Next,
-                              base::Unretained(this), host_impl),
-        // Use a delay to allow raster/upload to happen in between frames. This
-        // should cause flakiness if we fail to block raster/upload when
-        // desired.
-        base::TimeDelta::FromMilliseconds(16 * 4));
-  }
-
-  void Next(LayerTreeHostImpl* host_impl) {
-    ++frame_;
-    posted_ = false;
-    switch (frame_) {
-      case 2:
-        // Pinch zoom in.
-        host_impl->PinchGestureBegin();
-        host_impl->PinchGestureUpdate(1.5f, gfx::Point(100, 100));
-        host_impl->PinchGestureEnd();
-        break;
-      case 3:
-        // Pinch zoom back to 1.f but don't end it.
-        host_impl->PinchGestureBegin();
-        host_impl->PinchGestureUpdate(1.f / 1.5f, gfx::Point(100, 100));
-        break;
-      case 4:
-        // End the pinch, but delay tile production.
-        playback_allowed_event_.Reset();
-        host_impl->PinchGestureEnd();
-        break;
-      case 5:
-        // Let tiles complete.
-        playback_allowed_event_.Signal();
-        break;
-    }
-  }
-
-  void NotifyTileStateChangedOnThread(LayerTreeHostImpl* host_impl,
-                                      const Tile* tile) override {
-    if (frame_ == 3) {
-      // On frame 3, we will have a lower res tile complete for the pinch-out
-      // gesture even though it's not displayed. We wait for it here to prevent
-      // flakiness.
-      EXPECT_EQ(0.75f, tile->contents_scale());
-      PostNextAfterDraw(host_impl);
-    }
-    // On frame_ == 4, we are preventing texture uploads from completing,
-    // so this verifies they are not completing before frame_ == 5.
-    // Flaky failures here indicate we're failing to prevent uploads from
-    // completing.
-    EXPECT_NE(4, frame_) << tile->contents_scale();
-  }
-
-  void AfterTest() override {}
-
-  FakeContentLayerClient client_;
-  int frame_;
-  bool posted_;
-  base::WaitableEvent playback_allowed_event_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestCrispUpAfterPinchEnds);
-
-class LayerTreeHostTestCrispUpAfterPinchEndsWithOneCopy
-    : public LayerTreeHostTestCrispUpAfterPinchEnds {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->use_one_copy = true;
-  }
-
-  scoped_ptr<FakeOutputSurface> CreateFakeOutputSurface() override {
-    scoped_ptr<TestWebGraphicsContext3D> context3d =
-        TestWebGraphicsContext3D::Create();
-    context3d->set_support_image(true);
-    context3d->set_support_sync_query(true);
-#if defined(OS_MACOSX)
-    context3d->set_support_texture_rectangle(true);
-#endif
-
-    if (delegating_renderer())
-      return FakeOutputSurface::CreateDelegating3d(context3d.Pass());
-    else
-      return FakeOutputSurface::Create3d(context3d.Pass());
-  }
-};
-
-MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestCrispUpAfterPinchEndsWithOneCopy);
-
-class RasterizeWithGpuRasterizationCreatesResources : public LayerTreeHostTest {
- protected:
-  RasterizeWithGpuRasterizationCreatesResources() {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-    settings->gpu_rasterization_forced = true;
-  }
-
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-
-    scoped_refptr<Layer> root = Layer::Create();
-    root->SetBounds(gfx::Size(500, 500));
-
-    scoped_ptr<FakePicturePile> pile(
-        new FakePicturePile(ImplSidePaintingSettings().minimum_contents_scale,
-                            ImplSidePaintingSettings().default_tile_grid_size));
-    scoped_refptr<FakePictureLayer> layer =
-        FakePictureLayer::CreateWithRecordingSource(&client_, pile.Pass());
-    layer->SetBounds(gfx::Size(500, 500));
-    layer->SetContentsOpaque(true);
-    root->AddChild(layer);
-
-    layer_tree_host()->SetRootLayer(root);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    EXPECT_NE(0u, host_impl->resource_provider()->num_resources());
-    EndTest();
-    return draw_result;
-  }
-  void AfterTest() override {}
-
-  FakeContentLayerClient client_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(RasterizeWithGpuRasterizationCreatesResources);
-
-class SynchronousGpuRasterizationRasterizesVisibleOnly
-    : public LayerTreeHostTest {
- protected:
-  SynchronousGpuRasterizationRasterizesVisibleOnly()
-      : viewport_size_(1024, 2048) {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-    settings->gpu_rasterization_enabled = true;
-    settings->gpu_rasterization_forced = true;
-    settings->threaded_gpu_rasterization_enabled = false;
-  }
-
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-
-    scoped_ptr<FakePicturePile> pile(
-        new FakePicturePile(ImplSidePaintingSettings().minimum_contents_scale,
-                            ImplSidePaintingSettings().default_tile_grid_size));
-    scoped_refptr<FakePictureLayer> root =
-        FakePictureLayer::CreateWithRecordingSource(&client_, pile.Pass());
-    root->SetBounds(gfx::Size(viewport_size_.width(), 10000));
-    root->SetContentsOpaque(true);
-
-    layer_tree_host()->SetRootLayer(root);
-    LayerTreeHostTest::SetupTree();
-    layer_tree_host()->SetViewportSize(viewport_size_);
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    EXPECT_EQ(4u, host_impl->resource_provider()->num_resources());
-
-    // Verify which tiles got resources using an eviction iterator, which has to
-    // return all tiles that have resources.
-    scoped_ptr<EvictionTilePriorityQueue> eviction_queue(
-        host_impl->BuildEvictionQueue(SAME_PRIORITY_FOR_BOTH_TREES));
-    int tile_count = 0;
-    for (; !eviction_queue->IsEmpty(); eviction_queue->Pop()) {
-      Tile* tile = eviction_queue->Top();
-      // Ensure this tile is within the viewport.
-      EXPECT_TRUE(tile->content_rect().Intersects(gfx::Rect(viewport_size_)));
-      // Ensure that the tile is 1/4 of the viewport tall (plus padding).
-      EXPECT_EQ(tile->content_rect().height(),
-                (viewport_size_.height() / 4) + 2);
-      ++tile_count;
-    }
-    EXPECT_EQ(4, tile_count);
-    EndTest();
-    return draw_result;
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  gfx::Size viewport_size_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(SynchronousGpuRasterizationRasterizesVisibleOnly);
-
-class ThreadedGpuRasterizationRasterizesBorderTiles : public LayerTreeHostTest {
- protected:
-  ThreadedGpuRasterizationRasterizesBorderTiles()
-      : viewport_size_(1024, 2048) {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-    settings->gpu_rasterization_enabled = true;
-    settings->gpu_rasterization_forced = true;
-    settings->threaded_gpu_rasterization_enabled = true;
-  }
-
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-
-    scoped_ptr<FakePicturePile> pile(
-        new FakePicturePile(ImplSidePaintingSettings().minimum_contents_scale,
-                            ImplSidePaintingSettings().default_tile_grid_size));
-    scoped_refptr<FakePictureLayer> root =
-        FakePictureLayer::CreateWithRecordingSource(&client_, pile.Pass());
-    root->SetBounds(gfx::Size(10000, 10000));
-    root->SetContentsOpaque(true);
-
-    layer_tree_host()->SetRootLayer(root);
-    LayerTreeHostTest::SetupTree();
-    layer_tree_host()->SetViewportSize(viewport_size_);
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    EXPECT_EQ(10u, host_impl->resource_provider()->num_resources());
-    EndTest();
-    return draw_result;
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  gfx::Size viewport_size_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(ThreadedGpuRasterizationRasterizesBorderTiles);
-
-class LayerTreeHostTestContinuousDrawWhenCreatingVisibleTiles
-    : public LayerTreeHostTest {
- protected:
-  LayerTreeHostTestContinuousDrawWhenCreatingVisibleTiles()
-      : playback_allowed_event_(true, true) {}
-
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->impl_side_painting = true;
-  }
-
-  void SetupTree() override {
-    step_ = 1;
-    continuous_draws_ = 0;
-    client_.set_fill_with_nonsolid_color(true);
-
-    scoped_refptr<Layer> root = Layer::Create();
-    root->SetBounds(gfx::Size(500, 500));
-
-    scoped_refptr<Layer> pinch = Layer::Create();
-    pinch->SetBounds(gfx::Size(500, 500));
-    pinch->SetScrollClipLayerId(root->id());
-    pinch->SetIsContainerForFixedPositionLayers(true);
-    root->AddChild(pinch);
-
-    scoped_ptr<FakePicturePile> pile(
-        new FakePicturePile(ImplSidePaintingSettings().minimum_contents_scale,
-                            ImplSidePaintingSettings().default_tile_grid_size));
-    pile->SetPlaybackAllowedEvent(&playback_allowed_event_);
-    scoped_refptr<FakePictureLayer> layer =
-        FakePictureLayer::CreateWithRecordingSource(&client_, pile.Pass());
-    layer->SetBounds(gfx::Size(500, 500));
-    layer->SetContentsOpaque(true);
-    // Avoid LCD text on the layer so we don't cause extra commits when we
-    // pinch.
-    layer->disable_lcd_text();
-    pinch->AddChild(layer);
-
-    layer_tree_host()->RegisterViewportLayers(NULL, root, pinch, pinch);
-    layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 1.f, 4.f);
-    layer_tree_host()->SetRootLayer(root);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  // Returns the delta scale of all quads in the frame's root pass from their
-  // ideal, or 0 if they are not all the same.
-  float FrameQuadScaleDeltaFromIdeal(LayerTreeHostImpl::FrameData* frame_data) {
-    if (frame_data->has_no_damage)
-      return 0.f;
-    float frame_scale = 0.f;
-    RenderPass* root_pass = frame_data->render_passes.back();
-    for (const auto& draw_quad : root_pass->quad_list) {
-      const TileDrawQuad* quad = TileDrawQuad::MaterialCast(draw_quad);
-      float quad_scale =
-          quad->tex_coord_rect.width() / static_cast<float>(quad->rect.width());
-      float transform_scale =
-          SkMScalarToFloat(quad->quadTransform().matrix().get(0, 0));
-      float scale = quad_scale / transform_scale;
-      if (frame_scale != 0.f && frame_scale != scale)
-        return 0.f;
-      frame_scale = scale;
-    }
-    return frame_scale;
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
-                                   LayerTreeHostImpl::FrameData* frame_data,
-                                   DrawResult draw_result) override {
-    float quad_scale_delta = FrameQuadScaleDeltaFromIdeal(frame_data);
-    switch (step_) {
-      case 1:
-        // Drew at scale 1 before any pinching.
-        EXPECT_EQ(1.f, host_impl->active_tree()->current_page_scale_factor());
-        EXPECT_EQ(1.f, quad_scale_delta);
-        break;
-      case 2:
-        if (quad_scale_delta != 1.f / 1.5f)
-          break;
-        // Drew at scale 1 still though the ideal is 1.5.
-        EXPECT_EQ(1.5f, host_impl->active_tree()->current_page_scale_factor());
-        EXPECT_EQ(1.f / 1.5f, quad_scale_delta);
-        break;
-      case 3:
-        // Continuous draws are attempted.
-        EXPECT_EQ(1.5f, host_impl->active_tree()->current_page_scale_factor());
-        if (!frame_data->has_no_damage)
-          EXPECT_EQ(1.f / 1.5f, quad_scale_delta);
-        break;
-      case 4:
-        if (quad_scale_delta != 1.f)
-          break;
-        // Drew at scale 1.5 when all the tiles completed.
-        EXPECT_EQ(1.5f, host_impl->active_tree()->current_page_scale_factor());
-        EXPECT_EQ(1.f, quad_scale_delta);
-        break;
-      case 5:
-        // TODO(danakj): We get more draws before the NotifyReadyToDraw
-        // because it is asynchronous from the previous draw and happens late.
-        break;
-      case 6:
-        // NotifyReadyToDraw happened. If we were already inside a frame, we may
-        // try to draw once more.
-        break;
-      case 7:
-        NOTREACHED() << "No draws should happen once we have a complete frame.";
-        break;
-    }
-    return draw_result;
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    switch (step_) {
-      case 1:
-        // Delay tile production.
-        playback_allowed_event_.Reset();
-        // Pinch zoom in to cause new tiles to be required.
-        host_impl->PinchGestureBegin();
-        host_impl->PinchGestureUpdate(1.5f, gfx::Point(100, 100));
-        host_impl->PinchGestureEnd();
-        ++step_;
-        break;
-      case 2:
-        ++step_;
-        break;
-      case 3:
-        // We should continue to try draw while there are incomplete visible
-        // tiles.
-        if (++continuous_draws_ > 5) {
-          // Allow the tiles to complete.
-          playback_allowed_event_.Signal();
-          ++step_;
-        }
-        break;
-      case 4:
-        ++step_;
-        break;
-      case 5:
-        // Waiting for NotifyReadyToDraw.
-        break;
-      case 6:
-        // NotifyReadyToDraw happened.
-        ++step_;
-        break;
-    }
-  }
-
-  void NotifyReadyToDrawOnThread(LayerTreeHostImpl* host_impl) override {
-    if (step_ == 5) {
-      ++step_;
-      // NotifyReadyToDraw has happened, we may draw once more, but should not
-      // get any more draws after that. End the test after a timeout to watch
-      // for any extraneous draws.
-      // TODO(brianderson): We could remove this delay and instead wait until
-      // the BeginFrameSource decides it doesn't need to send frames anymore,
-      // or test that it already doesn't here.
-      EndTestAfterDelayMs(16 * 4);
-    }
-  }
-
-  void NotifyTileStateChangedOnThread(LayerTreeHostImpl* host_impl,
-                                      const Tile* tile) override {
-    // On step_ == 2, we are preventing texture uploads from completing,
-    // so this verifies they are not completing before step_ == 3.
-    // Flaky failures here indicate we're failing to prevent uploads from
-    // completing.
-    EXPECT_NE(2, step_);
-  }
-
-  void AfterTest() override { EXPECT_GT(continuous_draws_, 5); }
-
-  FakeContentLayerClient client_;
-  int step_;
-  int continuous_draws_;
-  base::WaitableEvent playback_allowed_event_;
-};
-
-MULTI_THREAD_TEST_F(LayerTreeHostTestContinuousDrawWhenCreatingVisibleTiles);
-
-class LayerTreeHostTestOneActivatePerPrepareTiles : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestOneActivatePerPrepareTiles()
-      : notify_ready_to_activate_count_(0u),
-        scheduled_prepare_tiles_count_(0) {}
-
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-    scoped_refptr<FakePictureLayer> root_layer =
-        FakePictureLayer::Create(&client_);
-    root_layer->SetBounds(gfx::Size(1500, 1500));
-    root_layer->SetIsDrawable(true);
-
-    layer_tree_host()->SetRootLayer(root_layer);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override {
-    layer_tree_host()->SetViewportSize(gfx::Size(16, 16));
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void InitializedRendererOnThread(LayerTreeHostImpl* host_impl,
-                                   bool success) override {
-    ASSERT_TRUE(success);
-    host_impl->tile_manager()->SetScheduledRasterTaskLimitForTesting(1);
-  }
-
-  void NotifyReadyToActivateOnThread(LayerTreeHostImpl* impl) override {
-    ++notify_ready_to_activate_count_;
-    EndTestAfterDelayMs(100);
-  }
-
-  void ScheduledActionPrepareTiles() override {
-    ++scheduled_prepare_tiles_count_;
-  }
-
-  void AfterTest() override {
-    // Expect at most a notification for each scheduled prepare tiles, plus one
-    // for the initial commit (which doesn't go through scheduled actions).
-    // The reason this is not an equality is because depending on timing, we
-    // might get a prepare tiles but not yet get a notification that we're
-    // ready to activate. The intent of a test is to ensure that we don't
-    // get more than one notification per prepare tiles, so this is OK.
-    EXPECT_LE(notify_ready_to_activate_count_,
-              1u + scheduled_prepare_tiles_count_);
-  }
-
- protected:
-  FakeContentLayerClient client_;
-  size_t notify_ready_to_activate_count_;
-  size_t scheduled_prepare_tiles_count_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestOneActivatePerPrepareTiles);
-
-class LayerTreeHostTestFrameTimingRequestsSaveTimestamps
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestFrameTimingRequestsSaveTimestamps()
-      : check_results_on_commit_(false) {}
-
-  void SetupTree() override {
-    scoped_refptr<FakePictureLayer> root_layer =
-        FakePictureLayer::Create(&client_);
-    root_layer->SetBounds(gfx::Size(200, 200));
-    root_layer->SetIsDrawable(true);
-
-    scoped_refptr<FakePictureLayer> child_layer =
-        FakePictureLayer::Create(&client_);
-    child_layer->SetBounds(gfx::Size(1500, 1500));
-    child_layer->SetIsDrawable(true);
-
-    std::vector<FrameTimingRequest> requests;
-    requests.push_back(FrameTimingRequest(1, gfx::Rect(0, 0, 100, 100)));
-    requests.push_back(FrameTimingRequest(2, gfx::Rect(300, 0, 100, 100)));
-    child_layer->SetFrameTimingRequests(requests);
-
-    root_layer->AddChild(child_layer);
-    layer_tree_host()->SetRootLayer(root_layer);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void BeginCommitOnThread(LayerTreeHostImpl* host_impl) override {
-    if (!check_results_on_commit_)
-      return;
-
-    // Since in reality, the events will be read by LayerTreeHost during commit,
-    // we check the requests here to ensure that they are correct at the next
-    // commit time (as opposed to checking in DrawLayers for instance).
-    // TODO(vmpstr): Change this to read things from the main thread when this
-    // information is propagated to the main thread (not yet implemented).
-    FrameTimingTracker* tracker = host_impl->frame_timing_tracker();
-    scoped_ptr<FrameTimingTracker::CompositeTimingSet> timing_set =
-        tracker->GroupCountsByRectId();
-    EXPECT_EQ(1u, timing_set->size());
-    auto rect_1_it = timing_set->find(1);
-    EXPECT_TRUE(rect_1_it != timing_set->end());
-    const auto& timing_events = rect_1_it->second;
-    EXPECT_EQ(1u, timing_events.size());
-    EXPECT_EQ(host_impl->active_tree()->source_frame_number(),
-              timing_events[0].frame_id);
-    EXPECT_GT(timing_events[0].timestamp, base::TimeTicks());
-
-    EndTest();
-  }
-
-  void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
-    check_results_on_commit_ = true;
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-  bool check_results_on_commit_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestFrameTimingRequestsSaveTimestamps);
-
-class LayerTreeHostTestActivationCausesPrepareTiles : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestActivationCausesPrepareTiles()
-      : scheduled_prepare_tiles_count_(0) {}
-
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-    scoped_refptr<FakePictureLayer> root_layer =
-        FakePictureLayer::Create(&client_);
-    root_layer->SetBounds(gfx::Size(150, 150));
-    root_layer->SetIsDrawable(true);
-
-    layer_tree_host()->SetRootLayer(root_layer);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void NotifyReadyToActivateOnThread(LayerTreeHostImpl* impl) override {
-    // Ensure we've already activated.
-    EXPECT_FALSE(impl->pending_tree());
-
-    // After activating, we either need to prepare tiles, or we've already
-    // called a scheduled prepare tiles. This is done because activation might
-    // cause us to have to memory available (old active tree is gone), so we
-    // need to ensure we will get a PrepareTiles call.
-    if (!impl->prepare_tiles_needed())
-      EXPECT_GE(scheduled_prepare_tiles_count_, 1);
-    EndTest();
-  }
-
-  void ScheduledActionPrepareTiles() override {
-    ++scheduled_prepare_tiles_count_;
-  }
-
-  void AfterTest() override {}
-
- protected:
-  FakeContentLayerClient client_;
-  int scheduled_prepare_tiles_count_;
-};
-
-MULTI_THREAD_IMPL_TEST_F(LayerTreeHostTestActivationCausesPrepareTiles);
-
-// This tests an assertion that DidCommit and WillCommit happen in the same
-// stack frame with no tasks that run between them.  Various embedders of
-// cc depend on this logic.  ui::Compositor holds a compositor lock between
-// these events and the inspector timeline wants begin/end CompositeLayers
-// to be properly nested with other begin/end events.
-class LayerTreeHostTestNoTasksBetweenWillAndDidCommit
-    : public LayerTreeHostTest {
- public:
-  LayerTreeHostTestNoTasksBetweenWillAndDidCommit() : did_commit_(false) {}
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void WillCommit() override {
-    MainThreadTaskRunner()->PostTask(
-        FROM_HERE, base::Bind(&LayerTreeHostTestNoTasksBetweenWillAndDidCommit::
-                                  EndTestShouldRunAfterDidCommit,
-                              base::Unretained(this)));
-  }
-
-  void EndTestShouldRunAfterDidCommit() {
-    EXPECT_TRUE(did_commit_);
-    EndTest();
-  }
-
-  void DidCommit() override {
-    EXPECT_FALSE(did_commit_);
-    did_commit_ = true;
-  }
-
-  void AfterTest() override { EXPECT_TRUE(did_commit_); }
-
- private:
-  bool did_commit_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestNoTasksBetweenWillAndDidCommit);
-
-// Verify that if a LayerImpl holds onto a copy request for multiple
-// frames that it will continue to have a render surface through
-// multiple commits, even though the Layer itself has no reason
-// to have a render surface.
-class LayerPreserveRenderSurfaceFromOutputRequests : public LayerTreeHostTest {
- protected:
-  void SetupTree() override {
-    scoped_refptr<Layer> root = Layer::Create();
-    root->CreateRenderSurface();
-    root->SetBounds(gfx::Size(10, 10));
-    child_ = Layer::Create();
-    child_->SetBounds(gfx::Size(20, 20));
-    root->AddChild(child_);
-
-    layer_tree_host()->SetRootLayer(root);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  static void CopyOutputCallback(scoped_ptr<CopyOutputResult> result) {}
-
-  void BeginTest() override {
-    child_->RequestCopyOfOutput(
-        CopyOutputRequest::CreateBitmapRequest(base::Bind(CopyOutputCallback)));
-    EXPECT_TRUE(child_->HasCopyRequest());
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidCommit() override { EXPECT_FALSE(child_->HasCopyRequest()); }
-
-  void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
-    LayerImpl* child_impl = host_impl->sync_tree()->LayerById(child_->id());
-
-    switch (host_impl->sync_tree()->source_frame_number()) {
-      case 0:
-        EXPECT_TRUE(child_impl->HasCopyRequest());
-        EXPECT_TRUE(child_impl->render_surface());
-        break;
-      case 1:
-        if (host_impl->proxy()->CommitToActiveTree()) {
-          EXPECT_TRUE(child_impl->HasCopyRequest());
-          EXPECT_TRUE(child_impl->render_surface());
-        } else {
-          EXPECT_FALSE(child_impl->HasCopyRequest());
-          EXPECT_FALSE(child_impl->render_surface());
-        }
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) override {
-    LayerImpl* child_impl = host_impl->active_tree()->LayerById(child_->id());
-    EXPECT_TRUE(child_impl->HasCopyRequest());
-    EXPECT_TRUE(child_impl->render_surface());
-
-    switch (host_impl->active_tree()->source_frame_number()) {
-      case 0:
-        // Lose output surface to prevent drawing and cause another commit.
-        host_impl->DidLoseOutputSurface();
-        break;
-      case 1:
-        EndTest();
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-  }
-
-  void AfterTest() override {}
-
- private:
-  scoped_refptr<Layer> child_;
-};
-
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerPreserveRenderSurfaceFromOutputRequests);
-
-}  // namespace cc