Add more missing closing namespace comments.

third_party/WebKit/Source/core/style/StylePendingImage.h

 /*
  * Copyright (C) 2010 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 77 matching lines @@
         m_isPendingImage = true;
     }
 
     // TODO(sashab): Replace this with <const CSSValue> once RefPtrWillBeMember<>
     // supports const types.
     RefPtrWillBeMember<CSSValue> m_value;
 };
 
 DEFINE_STYLE_IMAGE_TYPE_CASTS(StylePendingImage, isPendingImage());
 
-}
+} // namespace blink
 #endif