Add more missing closing namespace comments.

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

 /*
  * Copyright (C) 2014 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 53 matching lines @@
     m_firstInteger->animationEnded();
     m_secondInteger->animationEnded();
 }
 
 bool SVGAnimatedIntegerOptionalInteger::needsSynchronizeAttribute()
 {
     return m_firstInteger->needsSynchronizeAttribute()
         || m_secondInteger->needsSynchronizeAttribute();
 }
 
-}
+} // namespace blink