Rename WebCore namespace to blink in Platform

Source/platform/PlatformThreadData.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef PlatformThreadData_h
 #define PlatformThreadData_h
 
 #include "platform/PlatformExport.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
 
-namespace WebCore {
+namespace blink {
 
 class ThreadTimers;
 
 class PLATFORM_EXPORT PlatformThreadData {
     WTF_MAKE_NONCOPYABLE(PlatformThreadData);
 public:
     PlatformThreadData();
     ~PlatformThreadData();
 
     ThreadTimers& threadTimers() { return *m_threadTimers; }
 
     static PlatformThreadData& current();
     void destroy();
 
 private:
     OwnPtr<ThreadTimers> m_threadTimers;
 };
 
-} // namespace WebCore
+} // namespace blink
 
 #endif // PlatformThreadData_h