Add more missing closing namespace comments.

third_party/WebKit/Source/core/layout/BidiRun.h

 /**
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  *
  * 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.
@@ skipping 34 matching lines @@
     }
 
     BidiRun* next() { return static_cast<BidiRun*>(m_next); }
     LayoutObject* object() { return m_object; }
 
 public:
     LayoutObject* m_object;
     InlineBox* m_box;
 };
 
-}
+} // namespace blink
 
 #endif // BidiRun_h