Rename WebCore namespace to blink in Platform

Source/platform/DateTimeChooser.h

 /*
  * Copyright (C) 2012 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 19 matching lines @@
 
 #ifndef DateTimeChooser_h
 #define DateTimeChooser_h
 
 #include "platform/PlatformExport.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/heap/Handle.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
-namespace WebCore {
+namespace blink {
 
 struct DateTimeSuggestion {
     double value;
     String localizedValue;
     String label;
 };
 
 struct DateTimeChooserParameters {
     AtomicString type;
     IntRect anchorRectInRootView;
@@ skipping 14 matching lines @@
 };
 
 class PLATFORM_EXPORT DateTimeChooser : public RefCountedWillBeGarbageCollectedFinalized<DateTimeChooser> {
 public:
     virtual ~DateTimeChooser();
 
     virtual void endChooser() = 0;
     virtual void trace(Visitor*) { }
 };
 
-} // namespace WebCore
+} // namespace blink
 #endif // DateTimeChooser_h