Turn off computation of the interest rect in cc in synchronized paint mode.

cc/trees/layer_tree_host_pixeltest_masks.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 "build/build_config.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_image_layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/playback/display_item_list_settings.h"
@@ skipping 14 matching lines @@
 INSTANTIATE_PIXEL_RESOURCE_TEST_CASE_P(LayerTreeHostMasksPixelTest);
 
 class MaskContentLayerClient : public ContentLayerClient {
  public:
   explicit MaskContentLayerClient(const gfx::Size& bounds) : bounds_(bounds) {}
   ~MaskContentLayerClient() override {}
 
   bool FillsBoundsCompletely() const override { return false; }
   size_t GetApproximateUnsharedMemoryUsage() const override { return 0; }
 
+  gfx::Rect PaintableRegion() override { return gfx::Rect(bounds_); }
+
   scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
       const gfx::Rect& clip,
       PaintingControlSetting picture_control) override {
     SkPictureRecorder recorder;
     skia::RefPtr<SkCanvas> canvas = skia::SharePtr(
         recorder.beginRecording(gfx::RectToSkRect(gfx::Rect(bounds_))));
 
     SkPaint paint;
     paint.setStyle(SkPaint::kStroke_Style);
     paint.setStrokeWidth(SkIntToScalar(2));
@@ skipping 259 matching lines @@
 
 class CheckerContentLayerClient : public ContentLayerClient {
  public:
   CheckerContentLayerClient(const gfx::Size& bounds,
                            SkColor color,
                            bool vertical)
       : bounds_(bounds), color_(color), vertical_(vertical) {}
   ~CheckerContentLayerClient() override {}
   bool FillsBoundsCompletely() const override { return false; }
   size_t GetApproximateUnsharedMemoryUsage() const override { return 0; }
+  gfx::Rect PaintableRegion() override { return gfx::Rect(bounds_); }
   scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
       const gfx::Rect& clip,
       PaintingControlSetting picture_control) override {
     SkPictureRecorder recorder;
     skia::RefPtr<SkCanvas> canvas = skia::SharePtr(
         recorder.beginRecording(gfx::RectToSkRect(gfx::Rect(bounds_))));
 
     SkPaint paint;
     paint.setStyle(SkPaint::kStroke_Style);
     paint.setStrokeWidth(SkIntToScalar(4));
@@ skipping 27 matching lines @@
   bool vertical_;
 };
 
 class CircleContentLayerClient : public ContentLayerClient {
  public:
   explicit CircleContentLayerClient(const gfx::Size& bounds)
       : bounds_(bounds) {}
   ~CircleContentLayerClient() override {}
   bool FillsBoundsCompletely() const override { return false; }
   size_t GetApproximateUnsharedMemoryUsage() const override { return 0; }
+  gfx::Rect PaintableRegion() override { return gfx::Rect(bounds_); }
   scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
       const gfx::Rect& clip,
       PaintingControlSetting picture_control) override {
     SkPictureRecorder recorder;
     skia::RefPtr<SkCanvas> canvas = skia::SharePtr(
         recorder.beginRecording(gfx::RectToSkRect(gfx::Rect(bounds_))));
 
     SkPaint paint;
     paint.setStyle(SkPaint::kFill_Style);
     paint.setColor(SK_ColorWHITE);
@@ skipping 129 matching lines @@
 
   RunPixelResourceTest(background,
                        base::FilePath(
                            FILE_PATH_LITERAL("mask_of_layer_with_blend.png")));
 }
 
 }  // namespace
 }  // namespace cc
 
 #endif  // !defined(OS_ANDROID)