Cleanup namespace usage in platform/fonts/.

Source/platform/fonts/Latin1TextIterator.h

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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 44 matching lines @@
 
     int currentCharacter() const { return m_currentCharacter; }
     const LChar* characters() const { return m_characters; }
 
 private:
     const LChar* m_characters;
     int m_currentCharacter;
     int m_lastCharacter;
 };
 
-}
+} // namespace blink
 
 #endif