Delete preferred raster bounds code.

third_party/WebKit/Source/platform/graphics/GraphicsLayer.h

Index: third_party/WebKit/Source/platform/graphics/GraphicsLayer.h
diff --git a/third_party/WebKit/Source/platform/graphics/GraphicsLayer.h b/third_party/WebKit/Source/platform/graphics/GraphicsLayer.h
index a1ab48f234bb1a50020ecf4d674a610bf7d7237d..0d767375fbc96ea60bd428f62cb90067bbb4cdbb 100644
--- a/third_party/WebKit/Source/platform/graphics/GraphicsLayer.h
+++ b/third_party/WebKit/Source/platform/graphics/GraphicsLayer.h
@@ -276,10 +276,6 @@ class PLATFORM_EXPORT GraphicsLayer : public cc::LayerClient,
 
   void setHasWillChangeTransformHint(bool);
 
-  // See comments in cc::Layer::SetPreferredRasterBounds.
-  void setPreferredRasterBounds(const IntSize&);
-  void clearPreferredRasterBounds();
-
  protected:
   String debugName(cc::Layer*) const;
   bool shouldFlattenTransform() const { return m_shouldFlattenTransform; }
@@ -395,8 +391,6 @@ class PLATFORM_EXPORT GraphicsLayer : public cc::LayerClient,
   std::unique_ptr<PaintController> m_paintController;
 
   IntRect m_previousInterestRect;
-  IntSize m_preferredRasterBounds;
-  bool m_hasPreferredRasterBounds;
 };
 
 }  // namespace blink