Add more missing closing namespace comments.

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

 /*
  * Copyright (C) 2010 Apple 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 398 matching lines @@
     if (width == Likely8Bit)
         string = StringImpl::create8BitIfPossible(characters, size);
     else if (width == Force8Bit)
         string = String::make8BitFrom16BitSource(characters, size);
     else
         string = String(characters, size);
 
     return string;
 }
 
-}
+} // namespace blink