Add more missing closing namespace comments.

third_party/WebKit/Source/core/html/parser/HTMLMetaCharsetParser.cpp

 /*
  * Copyright (C) 2010 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 107 matching lines @@
             m_doneChecking = true;
             return true;
         }
 
         m_token.clear();
     }
 
     return false;
 }
 
-}
+} // namespace blink