Add more missing closing namespace comments.

third_party/WebKit/Source/core/layout/PointerEventsHitRules.cpp

 /*
     Copyright (C) 2007 Rob Buis <buis@kde.org>
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 100 matching lines @@
             canHitFill = true;
             canHitStroke = true;
             break;
         case PE_NONE:
             // nothing to do here, defaults are all false.
             break;
         }
     }
 }
 
-}
+} // namespace blink
 
 // vim:ts=4:noet