remove memoryinstrumentation

Source/core/platform/graphics/chromium/GraphicsLayerChromium.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 136 matching lines @@
     virtual void notifyAnimationFinished(double finishTime) OVERRIDE;
 
     // WebLayerScrollClient implementation.
     virtual void didScroll() OVERRIDE;
 
     WebKit::WebContentLayer* contentLayer() const { return m_layer.get(); }
 
     // Exposed for tests.
     WebKit::WebLayer* contentsLayer() const { return m_contentsLayer; }
 
-    virtual void reportMemoryUsage(MemoryObjectInfo*) const OVERRIDE;
-
 private:
     void updateNames();
     void updateChildList();
     void updateLayerPosition();
     void updateLayerSize();
     void updateAnchorPoint();
     void updateTransform();
     void updateChildrenTransform();
     void updateMasksToBounds();
     void updateLayerPreserves3D();
@@ skipping 40 matching lines @@
 
     typedef HashMap<String, int> AnimationIdMap;
     AnimationIdMap m_animationIdMap;
 
     ScrollableArea* m_scrollableArea;
 };
 
 } // namespace WebCore
 
 #endif