Fix display list canvas not rendering correctly on high dpi displays

Source/platform/graphics/GraphicsContext.h

 /*
  * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008-2009 Torch Mobile, Inc.
  * Copyright (C) 2013 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 241 matching lines @@
     void clearRect(const FloatRect&);
 
     void strokeRect(const FloatRect&);
     void strokeRect(const FloatRect&, float lineWidth);
 
     void fillBetweenRoundedRects(const IntRect&, const IntSize& outerTopLeft, const IntSize& outerTopRight, const IntSize& outerBottomLeft, const IntSize& outerBottomRight,
         const IntRect&, const IntSize& innerTopLeft, const IntSize& innerTopRight, const IntSize& innerBottomLeft, const IntSize& innerBottomRight, const Color&);
     void fillBetweenRoundedRects(const RoundedRect&, const RoundedRect&, const Color&);
 
     void drawPicture(const SkPicture*);
-    void drawPicture(SkPicture*, const FloatRect& dest, const FloatRect& src, CompositeOperator, WebBlendMode);
+    void compositePicture(SkPicture*, const FloatRect& dest, const FloatRect& src, CompositeOperator, WebBlendMode);
 
     void drawImage(Image*, const IntPoint&, CompositeOperator = CompositeSourceOver, RespectImageOrientationEnum = DoNotRespectImageOrientation);
     void drawImage(Image*, const IntRect&, CompositeOperator = CompositeSourceOver, RespectImageOrientationEnum = DoNotRespectImageOrientation);
     void drawImage(Image*, const FloatRect& destRect);
     void drawImage(Image*, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator = CompositeSourceOver, RespectImageOrientationEnum = DoNotRespectImageOrientation);
     void drawImage(Image*, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator, WebBlendMode, RespectImageOrientationEnum = DoNotRespectImageOrientation);
 
     void drawTiledImage(Image*, const IntRect& destRect, const IntPoint& srcPoint, const IntSize& tileSize,
         CompositeOperator = CompositeSourceOver, WebBlendMode = WebBlendModeNormal, const IntSize& repeatSpacing = IntSize());
     void drawTiledImage(Image*, const IntRect& destRect, const IntRect& srcRect,
@@ skipping 245 matching lines @@
     unsigned m_accelerated : 1;
     unsigned m_isCertainlyOpaque : 1;
     unsigned m_printing : 1;
     unsigned m_antialiasHairlineImages : 1;
     unsigned m_shouldSmoothFonts : 1;
 };
 
 } // namespace blink
 
 #endif // GraphicsContext_h