NodeFilter acceptNode return type changed to unsigned

Source/core/dom/NodeFilter.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 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 59 matching lines @@
     static PassRefPtrWillBeRawPtr<NodeFilter> create(PassRefPtrWillBeRawPtr<NodeFilterCondition> condition)
     {
         return adoptRefWillBeNoop(new NodeFilter(condition));
     }
 
     static PassRefPtrWillBeRawPtr<NodeFilter> create()
     {
         return adoptRefWillBeNoop(new NodeFilter());
     }
 
-    short acceptNode(Node*, ExceptionState&) const;
+    unsigned acceptNode(Node*, ExceptionState&) const;
 
     void setCondition(PassRefPtrWillBeRawPtr<NodeFilterCondition> condition)
     {
         m_condition = condition;
     }
 
     DECLARE_TRACE();
 
 private:
     explicit NodeFilter(PassRefPtrWillBeRawPtr<NodeFilterCondition> condition) : m_condition(condition) { }
 
     NodeFilter() { }
 
     RefPtrWillBeMember<NodeFilterCondition> m_condition;
 };
 
 } // namespace blink
 
 #endif // NodeFilter_h