Add more missing closing namespace comments.

third_party/WebKit/Source/core/dom/AddConsoleMessageTask.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 36 matching lines @@
         : m_source(source)
         , m_level(level)
         , m_message(message.isolatedCopy())
     {
     }
     MessageSource m_source;
     MessageLevel m_level;
     String m_message;
 };
 
-} // namespace
+} // namespace blink
 
 #endif