Add more missing closing namespace comments.

third_party/WebKit/Source/core/svg/properties/SVGPropertyTearOff.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * 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 141 matching lines @@
         : SVGPropertyTearOffBase(contextElement, propertyIsAnimVal, attributeName)
         , m_target(target)
     {
         ASSERT(m_target);
     }
 
 private:
     RefPtrWillBeMember<Property> m_target;
 };
 
-}
+} // namespace blink
 
 #endif // SVGPropertyTearOff_h