Rename WebCore namespace to blink in Platform

Source/platform/OverscrollTheme.h

 /*
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  *
  */
 
 #ifndef OverscrollTheme_h
 #define OverscrollTheme_h
 
 #include "platform/PlatformExport.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/Image.h"
 
-namespace WebCore {
+namespace blink {
 
 class PLATFORM_EXPORT OverscrollTheme {
     WTF_MAKE_NONCOPYABLE(OverscrollTheme); WTF_MAKE_FAST_ALLOCATED;
 public:
     OverscrollTheme();
     virtual ~OverscrollTheme() { }
 
     virtual PassRefPtr<Image> getOverhangImage();
     virtual void setUpOverhangShadowLayer(GraphicsLayer*);
     virtual void updateOverhangShadowLayer(GraphicsLayer* shadowLayer, GraphicsLayer* rootContentLayer);
 
     static OverscrollTheme* theme();
 
 private:
     RefPtr<Image> m_overhangShadow;
     RefPtr<Image> m_overhangPattern;
 };
 
 }
 
 #endif