Rename WebCore namespace to blink in Platform

Source/platform/ColorChooser.h

 /*
  * Copyright (C) 2011 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
@@ skipping 14 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
 
 #ifndef ColorChooser_h
 #define ColorChooser_h
 
 #include "platform/PlatformExport.h"
 
-namespace WebCore {
+namespace blink {
 
 class Color;
 
 class PLATFORM_EXPORT ColorChooser {
 public:
     ColorChooser();
     virtual ~ColorChooser();
 
     virtual void setSelectedColor(const Color&) { }
     virtual void endChooser() { }
 };
 
-} // namespace WebCore
+} // namespace blink
 
 #endif // ColorChooser_h