Add more missing closing namespace comments.

third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceRadialGradient.h

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * 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,
@@ skipping 46 matching lines @@
 #else
     RadialGradientAttributes m_attributes;
 
     RadialGradientAttributes& mutableAttributes() { return m_attributes; }
     const RadialGradientAttributes& attributes() const { return m_attributes; }
 #endif
 };
 
 DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(LayoutSVGResourceRadialGradient, RadialGradientResourceType);
 
-}
+} // namespace blink
 
 #endif