Transfer LayerImpl ownership to LayerTreeImpl

cc/trees/layer_tree_host_unittest_picture.cc

 // Copyright 2013 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 "cc/test/fake_content_layer_client.h"
 #include "cc/test/fake_picture_layer.h"
 #include "cc/test/fake_picture_layer_impl.h"
 #include "cc/test/layer_tree_test.h"
@@ skipping 64 matching lines @@
   void WillActivateTreeOnThread(LayerTreeHostImpl* impl) override {
     LayerImpl* pending_root_impl = impl->pending_tree()->root_layer();
     LayerImpl* active_root_impl = impl->active_tree()->root_layer();
 
     if (pending_root_impl->children().empty()) {
       EXPECT_EQ(2, activates_);
       return;
     }
 
     FakePictureLayerImpl* pending_picture_impl =
-        static_cast<FakePictureLayerImpl*>(
-            pending_root_impl->children()[0].get());
+        static_cast<FakePictureLayerImpl*>(pending_root_impl->children()[0]);
 
     if (!active_root_impl) {
       EXPECT_EQ(0, activates_);
       EXPECT_EQ(nullptr, pending_picture_impl->GetPendingOrActiveTwinLayer());
       return;
     }
 
     if (active_root_impl->children().empty()) {
       EXPECT_EQ(3, activates_);
       EXPECT_EQ(nullptr, pending_picture_impl->GetPendingOrActiveTwinLayer());
       return;
     }
 
     FakePictureLayerImpl* active_picture_impl =
-        static_cast<FakePictureLayerImpl*>(
-            active_root_impl->children()[0].get());
+        static_cast<FakePictureLayerImpl*>(active_root_impl->children()[0]);
 
     // After the first activation, when we commit again, we'll have a pending
     // and active layer. Then we recreate a picture layer in the 4th activate
     // and the next commit will have a pending and active twin again.
     EXPECT_TRUE(activates_ == 1 || activates_ == 4) << activates_;
 
     EXPECT_EQ(pending_picture_impl,
               active_picture_impl->GetPendingOrActiveTwinLayer());
     EXPECT_EQ(active_picture_impl,
               pending_picture_impl->GetPendingOrActiveTwinLayer());
   }
 
   void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
     LayerImpl* active_root_impl = impl->active_tree()->root_layer();
     if (active_root_impl->children().empty()) {
       EXPECT_EQ(2, activates_);
     } else {
       FakePictureLayerImpl* active_picture_impl =
-          static_cast<FakePictureLayerImpl*>(
-              active_root_impl->children()[0].get());
+          static_cast<FakePictureLayerImpl*>(active_root_impl->children()[0]);
       EXPECT_EQ(nullptr, active_picture_impl->GetPendingOrActiveTwinLayer());
     }
 
     ++activates_;
   }
 
   void AfterTest() override { EXPECT_EQ(5, activates_); }
 
   int activates_;
 };
@@ skipping 16 matching lines @@
     picture_->SetBounds(gfx::Size(768, 960));
     root->AddChild(picture_);
 
     layer_tree_host()->SetRootLayer(root);
     LayerTreeHostPictureTest::SetupTree();
   }
 
   void BeginTest() override { PostSetNeedsCommitToMainThread(); }
 
   void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
-    LayerImpl* child = impl->sync_tree()->root_layer()->children()[0].get();
+    LayerImpl* child = impl->sync_tree()->root_layer()->children()[0];
     FakePictureLayerImpl* picture_impl =
         static_cast<FakePictureLayerImpl*>(child);
     gfx::Size tile_size =
         picture_impl->HighResTiling()->TileAt(0, 0)->content_rect().size();
 
     switch (impl->sync_tree()->source_frame_number()) {
       case 0:
         tile_size_ = tile_size;
         // GPU Raster picks a tile size based on the viewport size.
         EXPECT_EQ(gfx::Size(768, 256), tile_size);
@@ skipping 48 matching lines @@
     picture_->SetScrollClipLayerId(root->id());
 
     layer_tree_host()->SetRootLayer(root);
     LayerTreeHostPictureTest::SetupTree();
     client_.set_bounds(picture_->bounds());
   }
 
   void BeginTest() override { PostSetNeedsCommitToMainThread(); }
 
   void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
-    LayerImpl* child = impl->active_tree()->root_layer()->children()[0].get();
+    LayerImpl* child = impl->active_tree()->root_layer()->children()[0];
     FakePictureLayerImpl* picture_impl =
         static_cast<FakePictureLayerImpl*>(child);
     switch (++frame_) {
       case 1: {
         PictureLayerTiling* tiling = picture_impl->HighResTiling();
         int num_tiles_y = tiling->TilingDataForTesting().num_tiles_y();
 
         // There should be tiles at the top of the picture layer but not at the
         // bottom.
         EXPECT_TRUE(tiling->TileAt(0, 0));
@@ skipping 28 matching lines @@
         // Make a new main frame without changing the picture layer at all, so
         // it won't need to update or push properties.
         did_post_commit_ = true;
         PostSetNeedsCommitToMainThread();
         break;
       }
     }
   }
 
   void WillActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    LayerImpl* child = impl->sync_tree()->root_layer()->children()[0].get();
+    LayerImpl* child = impl->sync_tree()->root_layer()->children()[0];
     FakePictureLayerImpl* picture_impl =
         static_cast<FakePictureLayerImpl*>(child);
     PictureLayerTiling* tiling = picture_impl->HighResTiling();
     int num_tiles_y = tiling->TilingDataForTesting().num_tiles_y();
 
     if (!impl->active_tree()->root_layer()) {
       // If active tree doesn't have the layer, then pending tree should have
       // all needed tiles.
       EXPECT_TRUE(tiling->TileAt(0, 0));
     } else {
@@ skipping 34 matching lines @@
     child_->AddChild(picture_);
 
     layer_tree_host()->SetRootLayer(root);
     LayerTreeHostPictureTest::SetupTree();
   }
 
   void BeginTest() override { PostSetNeedsCommitToMainThread(); }
 
   void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
     LayerImpl* root = impl->sync_tree()->root_layer();
-    LayerImpl* child = root->children()[0].get();
-    LayerImpl* gchild = child->children()[0].get();
+    LayerImpl* child = root->children()[0];
+    LayerImpl* gchild = child->children()[0];
     FakePictureLayerImpl* picture = static_cast<FakePictureLayerImpl*>(gchild);
 
     switch (impl->sync_tree()->source_frame_number()) {
       case 0:
         // On 1st commit the layer has tilings.
         EXPECT_GT(picture->tilings()->num_tilings(), 0u);
         break;
       case 1:
         // On 2nd commit, the layer is transparent, but its tilings are left
         // there.
         EXPECT_GT(picture->tilings()->num_tilings(), 0u);
         break;
       case 2:
         // On 3rd commit, the layer is visible again, so has tilings.
         EXPECT_GT(picture->tilings()->num_tilings(), 0u);
     }
   }
 
   void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
     LayerImpl* root = impl->active_tree()->root_layer();
-    LayerImpl* child = root->children()[0].get();
-    LayerImpl* gchild = child->children()[0].get();
+    LayerImpl* child = root->children()[0];
+    LayerImpl* gchild = child->children()[0];
     FakePictureLayerImpl* picture = static_cast<FakePictureLayerImpl*>(gchild);
 
     switch (impl->active_tree()->source_frame_number()) {
       case 0:
         // On 1st commit the layer has tilings.
         EXPECT_GT(picture->tilings()->num_tilings(), 0u);
         break;
       case 1:
         // On 2nd commit, the layer is transparent, but its tilings are left
         // there.
@@ skipping 65 matching lines @@
   void BeginTest() override {
     frame_ = 0;
     draws_in_frame_ = 0;
     last_frame_drawn_ = -1;
     ready_to_draw_ = false;
     PostSetNeedsCommitToMainThread();
   }
 
   void WillActivateTreeOnThread(LayerTreeHostImpl* impl) override {
     LayerImpl* root = impl->sync_tree()->root_layer();
-    LayerImpl* pinch = root->children()[0]->children()[0].get();
-    LayerImpl* gchild = pinch->children()[0].get();
+    LayerImpl* pinch = root->children()[0]->children()[0];
+    LayerImpl* gchild = pinch->children()[0];
     FakePictureLayerImpl* picture = static_cast<FakePictureLayerImpl*>(gchild);
     ready_to_draw_ = false;
 
     switch (frame_) {
       case 0:
         // On 1st commit the pending layer has tilings.
         ASSERT_EQ(1u, picture->tilings()->num_tilings());
         EXPECT_EQ(1.f, picture->tilings()->tiling_at(0)->contents_scale());
         break;
       case 1:
         // On 2nd commit, the pending layer is transparent, so has a stale
         // value.
         ASSERT_EQ(1u, picture->tilings()->num_tilings());
         EXPECT_EQ(1.f, picture->tilings()->tiling_at(0)->contents_scale());
         break;
       case 2:
         // On 3rd commit, the pending layer is visible again, so has tilings and
         // is updated for the pinch.
         ASSERT_EQ(1u, picture->tilings()->num_tilings());
         EXPECT_EQ(2.f, picture->tilings()->tiling_at(0)->contents_scale());
     }
   }
 
   void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
     LayerImpl* root = impl->active_tree()->root_layer();
-    LayerImpl* pinch = root->children()[0]->children()[0].get();
-    LayerImpl* gchild = pinch->children()[0].get();
+    LayerImpl* pinch = root->children()[0]->children()[0];
+    LayerImpl* gchild = pinch->children()[0];
     FakePictureLayerImpl* picture = static_cast<FakePictureLayerImpl*>(gchild);
 
     if (frame_ != last_frame_drawn_)
       draws_in_frame_ = 0;
     ++draws_in_frame_;
     last_frame_drawn_ = frame_;
 
     switch (frame_) {
       case 0:
         if (draws_in_frame_ == 1) {
@@ skipping 82 matching lines @@
   int last_frame_drawn_;
   bool ready_to_draw_;
 };
 
 // Multi-thread only because in single thread you can't pinch zoom on the
 // compositor thread.
 MULTI_THREAD_TEST_F(LayerTreeHostPictureTestRSLLMembershipWithScale);
 
 }  // namespace
 }  // namespace cc