Add more missing closing namespace comments.

third_party/WebKit/Source/core/css/DOMWindowCSS.cpp

 /*
  * Copyright (C) 2012 Motorola Mobility 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
@@ skipping 44 matching lines @@
     return CSSParser::parseSupportsCondition(conditionText);
 }
 
 String DOMWindowCSS::escape(const String& ident)
 {
     StringBuilder builder;
     serializeIdentifier(ident, builder);
     return builder.toString();
 }
 
-}
+} // namespace blink