Cleanup namespace usage in platform/fonts/.

Source/platform/fonts/SVGGlyph.cpp

 /*
  * Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010-2011. 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 168 matching lines @@
         }
 
         if (!found)
             return false;
     }
 
     // Check wheter arabic form is compatible
     return isCompatibleArabicForm(identifier, chars, startPosition, endPosition);
 }
 
-}
+} // namespace blink
 
 #endif