Rename WebCore namespace to blink in Platform

Source/platform/FileChooser.h

 /*
  * Copyright (C) 2006, 2007, 2008 Apple 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 17 matching lines @@
  */
 
 #ifndef FileChooser_h
 #define FileChooser_h
 
 #include "platform/PlatformExport.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
-namespace WebCore {
+namespace blink {
 
 class FileChooser;
 
 struct FileChooserFileInfo {
     FileChooserFileInfo(const String& path, const String& displayName = String())
         : path(path)
         , displayName(displayName)
     {
     }
 
@@ skipping 42 matching lines @@
 
     const FileChooserSettings& settings() const { return m_settings; }
 
 private:
     FileChooser(FileChooserClient*, const FileChooserSettings&);
 
     FileChooserClient* m_client;
     FileChooserSettings m_settings;
 };
 
-} // namespace WebCore
+} // namespace blink
 
 #endif // FileChooser_h