Cleanup namespace usage in Source/core/{dom/* & fileapi/*}

Source/core/dom/Range.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Gunnstein Lye (gunnstein@netcom.no)
  * (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. 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
@@ skipping 156 matching lines @@
 
     RefPtrWillBeMember<Document> m_ownerDocument; // Cannot be null.
     RangeBoundaryPoint m_start;
     RangeBoundaryPoint m_end;
 };
 
 PassRefPtrWillBeRawPtr<Range> rangeOfContents(Node*);
 
 bool areRangesEqual(const Range*, const Range*);
 
-} // namespace
+} // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::Range*);
 #endif
 
 #endif