Remove parts of //cc we aren't using

cc/layers/picture_layer.cc

Index: cc/layers/picture_layer.cc
diff --git a/cc/layers/picture_layer.cc b/cc/layers/picture_layer.cc
deleted file mode 100644
index ad1d5a0fc7d091019f5ac25c6a2726f2c003bb12..0000000000000000000000000000000000000000
--- a/cc/layers/picture_layer.cc
+++ /dev/null
@@ -1,219 +0,0 @@
-// Copyright 2012 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/layers/picture_layer.h"
-
-#include "base/auto_reset.h"
-#include "cc/layers/content_layer_client.h"
-#include "cc/layers/picture_layer_impl.h"
-#include "cc/resources/display_list_recording_source.h"
-#include "cc/resources/picture_pile.h"
-#include "cc/trees/layer_tree_host.h"
-#include "cc/trees/layer_tree_impl.h"
-#include "third_party/skia/include/core/SkPictureRecorder.h"
-#include "ui/gfx/geometry/rect_conversions.h"
-
-namespace cc {
-
-scoped_refptr<PictureLayer> PictureLayer::Create(ContentLayerClient* client) {
-  return make_scoped_refptr(new PictureLayer(client));
-}
-
-PictureLayer::PictureLayer(ContentLayerClient* client)
-    : client_(client),
-      instrumentation_object_tracker_(id()),
-      update_source_frame_number_(-1),
-      is_mask_(false),
-      nearest_neighbor_(false) {
-}
-
-PictureLayer::PictureLayer(ContentLayerClient* client,
-                           scoped_ptr<RecordingSource> source)
-    : PictureLayer(client) {
-  recording_source_ = source.Pass();
-}
-
-PictureLayer::~PictureLayer() {
-}
-
-scoped_ptr<LayerImpl> PictureLayer::CreateLayerImpl(LayerTreeImpl* tree_impl) {
-  return PictureLayerImpl::Create(tree_impl, id(), is_mask_,
-                                  new LayerImpl::SyncedScrollOffset);
-}
-
-void PictureLayer::PushPropertiesTo(LayerImpl* base_layer) {
-  Layer::PushPropertiesTo(base_layer);
-  PictureLayerImpl* layer_impl = static_cast<PictureLayerImpl*>(base_layer);
-  // TODO(danakj): Make is_mask_ a constructor parameter for PictureLayer.
-  DCHECK_EQ(layer_impl->is_mask(), is_mask_);
-
-  int source_frame_number = layer_tree_host()->source_frame_number();
-  gfx::Size impl_bounds = layer_impl->bounds();
-  gfx::Size recording_source_bounds = recording_source_->GetSize();
-
-  // If update called, then recording source size must match bounds pushed to
-  // impl layer.
-  DCHECK_IMPLIES(update_source_frame_number_ == source_frame_number,
-                 impl_bounds == recording_source_bounds)
-      << " bounds " << impl_bounds.ToString() << " recording source "
-      << recording_source_bounds.ToString();
-
-  if (update_source_frame_number_ != source_frame_number &&
-      recording_source_bounds != impl_bounds) {
-    // Update may not get called for the layer (if it's not in the viewport
-    // for example, even though it has resized making the recording source no
-    // longer valid. In this case just destroy the recording source.
-    recording_source_->SetEmptyBounds();
-  }
-
-  layer_impl->SetNearestNeighbor(nearest_neighbor_);
-
-  // Preserve lcd text settings from the current raster source.
-  bool can_use_lcd_text = layer_impl->RasterSourceUsesLCDText();
-  scoped_refptr<RasterSource> raster_source =
-      recording_source_->CreateRasterSource(can_use_lcd_text);
-  layer_impl->set_gpu_raster_max_texture_size(
-      layer_tree_host()->device_viewport_size());
-  layer_impl->UpdateRasterSource(raster_source, &recording_invalidation_,
-                                 nullptr);
-  DCHECK(recording_invalidation_.IsEmpty());
-}
-
-void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) {
-  Layer::SetLayerTreeHost(host);
-  if (!host)
-    return;
-
-  if (!recording_source_) {
-    if (host->settings().use_display_lists) {
-      recording_source_.reset(new DisplayListRecordingSource);
-    } else {
-      recording_source_.reset(
-          new PicturePile(host->settings().minimum_contents_scale,
-                          host->settings().default_tile_grid_size));
-    }
-  }
-  recording_source_->DidMoveToNewCompositor();
-  recording_source_->SetSlowdownRasterScaleFactor(
-      host->debug_state().slow_down_raster_scale_factor);
-  recording_source_->SetGatherPixelRefs(host->settings().gather_pixel_refs);
-
-  DCHECK(host->settings().raster_enabled);
-}
-
-void PictureLayer::SetNeedsDisplayRect(const gfx::Rect& layer_rect) {
-  if (!layer_rect.IsEmpty()) {
-    // Clamp invalidation to the layer bounds.
-    pending_invalidation_.Union(
-        gfx::IntersectRects(layer_rect, gfx::Rect(bounds())));
-  }
-  Layer::SetNeedsDisplayRect(layer_rect);
-}
-
-bool PictureLayer::Update(ResourceUpdateQueue* queue,
-                          const OcclusionTracker<Layer>* occlusion) {
-  update_source_frame_number_ = layer_tree_host()->source_frame_number();
-  bool updated = Layer::Update(queue, occlusion);
-
-  gfx::Rect visible_layer_rect = gfx::ScaleToEnclosingRect(
-      visible_content_rect(), 1.f / contents_scale_x());
-  gfx::Size layer_size = paint_properties().bounds;
-
-  if (last_updated_visible_content_rect_ == visible_content_rect() &&
-      recording_source_->GetSize() == layer_size &&
-      pending_invalidation_.IsEmpty()) {
-    // Only early out if the visible content rect of this layer hasn't changed.
-    return updated;
-  }
-
-  recording_source_->SetBackgroundColor(SafeOpaqueBackgroundColor());
-  recording_source_->SetRequiresClear(!contents_opaque() &&
-                                      !client_->FillsBoundsCompletely());
-
-  TRACE_EVENT1("cc", "PictureLayer::Update",
-               "source_frame_number",
-               layer_tree_host()->source_frame_number());
-  devtools_instrumentation::ScopedLayerTreeTask update_layer(
-      devtools_instrumentation::kUpdateLayer, id(), layer_tree_host()->id());
-
-  // Calling paint in WebKit can sometimes cause invalidations, so save
-  // off the invalidation prior to calling update.
-  pending_invalidation_.Swap(&recording_invalidation_);
-  pending_invalidation_.Clear();
-
-  if (layer_tree_host()->settings().record_full_layer) {
-    // Workaround for http://crbug.com/235910 - to retain backwards compat
-    // the full page content must always be provided in the picture layer.
-    visible_layer_rect = gfx::Rect(layer_size);
-  }
-
-  // UpdateAndExpandInvalidation will give us an invalidation that covers
-  // anything not explicitly recorded in this frame. We give this region
-  // to the impl side so that it drops tiles that may not have a recording
-  // for them.
-  DCHECK(client_);
-  updated |= recording_source_->UpdateAndExpandInvalidation(
-      client_, &recording_invalidation_, layer_size, visible_layer_rect,
-      update_source_frame_number_, RecordingSource::RECORD_NORMALLY);
-  last_updated_visible_content_rect_ = visible_content_rect();
-
-  if (updated) {
-    SetNeedsPushProperties();
-  } else {
-    // If this invalidation did not affect the recording source, then it can be
-    // cleared as an optimization.
-    recording_invalidation_.Clear();
-  }
-
-  return updated;
-}
-
-void PictureLayer::SetIsMask(bool is_mask) {
-  is_mask_ = is_mask;
-}
-
-skia::RefPtr<SkPicture> PictureLayer::GetPicture() const {
-  // We could either flatten the RecordingSource into a single SkPicture,
-  // or paint a fresh one depending on what we intend to do with the
-  // picture. For now we just paint a fresh one to get consistent results.
-  if (!DrawsContent())
-    return skia::RefPtr<SkPicture>();
-
-  int width = bounds().width();
-  int height = bounds().height();
-
-  SkPictureRecorder recorder;
-  SkCanvas* canvas = recorder.beginRecording(width, height, nullptr, 0);
-  client_->PaintContents(canvas, gfx::Rect(width, height),
-                         ContentLayerClient::PAINTING_BEHAVIOR_NORMAL);
-  skia::RefPtr<SkPicture> picture = skia::AdoptRef(recorder.endRecording());
-  return picture;
-}
-
-bool PictureLayer::IsSuitableForGpuRasterization() const {
-  return recording_source_->IsSuitableForGpuRasterization();
-}
-
-void PictureLayer::ClearClient() {
-  client_ = nullptr;
-  UpdateDrawsContent(HasDrawableContent());
-}
-
-void PictureLayer::SetNearestNeighbor(bool nearest_neighbor) {
-  if (nearest_neighbor_ == nearest_neighbor)
-    return;
-
-  nearest_neighbor_ = nearest_neighbor;
-  SetNeedsCommit();
-}
-
-bool PictureLayer::HasDrawableContent() const {
-  return client_ && Layer::HasDrawableContent();
-}
-
-void PictureLayer::RunMicroBenchmark(MicroBenchmark* benchmark) {
-  benchmark->RunOnLayer(this);
-}
-
-}  // namespace cc