Add more missing closing namespace comments.

third_party/WebKit/Source/core/css/MediaQueryListListener.h

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 20 matching lines @@
 class CORE_EXPORT MediaQueryListListener : public RefCountedWillBeGarbageCollected<MediaQueryListListener> {
     DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(MediaQueryListListener);
 public:
     virtual void notifyMediaQueryChanged() = 0;
 
     DEFINE_INLINE_VIRTUAL_TRACE() { }
 protected:
     MediaQueryListListener();
 };
 
-}
+} // namespace blink
 
 #endif // MediaQueryListListener_h