Rename WebCore namespace to blink in Platform

Source/platform/graphics/OpaqueRectTrackingContentLayerDelegate.h

 /*
  * Copyright (C) 2012 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 #ifndef OpaqueRectTrackingContentLayerDelegate_h
 #define OpaqueRectTrackingContentLayerDelegate_h
 
 #include "platform/PlatformExport.h"
 #include "public/platform/WebContentLayerClient.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassOwnPtr.h"
 
 class SkCanvas;
 
-namespace WebCore {
+namespace blink {
 
 class GraphicsContext;
 class IntRect;
 
 class PLATFORM_EXPORT GraphicsContextPainter {
 public:
     virtual void paint(GraphicsContext&, const IntRect& clip) = 0;
 
 protected:
     virtual ~GraphicsContextPainter() { }
@@ skipping 14 matching lines @@
         blink::WebContentLayerClient::GraphicsContextStatus = GraphicsContextEnabled) OVERRIDE;
 
 private:
     GraphicsContextPainter* m_painter;
     bool m_opaque;
 };
 
 }
 
 #endif // OpaqueRectTrackingContentLayerDelegate_h