Add more missing closing namespace comments.

third_party/WebKit/Source/core/svg/properties/SVGListPropertyHelper.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 351 matching lines @@
     ASSERT(!fromListSize || fromListSize == toListSize);
     if (length() < toListSize) {
         size_t paddingCount = toListSize - length();
         for (size_t i = 0; i < paddingCount; ++i)
             append(createPaddingItem());
     }
 
     return true;
 }
 
-}
+} // namespace blink
 
 #endif // SVGListPropertyHelper_h