Add more missing closing namespace comments.

third_party/WebKit/Source/core/svg/SVGDiscardElement.cpp

 /*
  * Copyright (C) 2014 Samsung Electronics. 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 36 matching lines @@
     // Even if there is no targetElement, discard is still a valid animation as it has to delete itself.
     return true;
 }
 
 bool SVGDiscardElement::hasValidAttributeName()
 {
     // discard does not use attributeName so it is always valid.
     return true;
 }
 
-}
+} // namespace blink