Add missing closing namespace comments to wtf.

third_party/WebKit/Source/wtf/ThreadRestrictionVerifier.h

 /*
  * Copyright (C) 2011 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 63 matching lines @@
         return m_owningThread == currentThread();
     }
 
 private:
     bool m_shared;
 
     // Used by SingleThreadVerificationMode
     ThreadIdentifier m_owningThread;
 };
 
-}
+} // namespace WTF
 
 #endif // ENABLE(ASSERT)
 #endif // ThreadRestrictionVerifier_h