Change cc files from namespace WebCore to cc

cc/CCCheckerboardDrawQuad.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CCCheckerboardDrawQuad_h
 #define CCCheckerboardDrawQuad_h
 
 #include "CCDrawQuad.h"
 #include <wtf/PassOwnPtr.h>
 
-namespace WebCore {
+namespace cc {
 
 #pragma pack(push, 4)
 
 class CCCheckerboardDrawQuad : public CCDrawQuad {
 public:
     static PassOwnPtr<CCCheckerboardDrawQuad> create(const CCSharedQuadState*, const IntRect&);
 
     static const CCCheckerboardDrawQuad* materialCast(const CCDrawQuad*);
 private:
     CCCheckerboardDrawQuad(const CCSharedQuadState*, const IntRect&);
 };
 
 #pragma pack(pop)
 
 }
 
 #endif