Cleanup namespace usage in Source/core/{dom/* & fileapi/*}

Source/core/dom/ExecutionContextClient.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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 57 matching lines @@
     virtual void tasksWereResumed() { }
 
     void addConsoleMessage(PassRefPtrWillBeRawPtr<ConsoleMessage> consoleMessage) { addMessage(consoleMessage); }
 
 protected:
     virtual ~ExecutionContextClient() { }
 
 };
 
 
-} // namespace
+} // namespace blink
 
 #endif