NodeFilter acceptNode return type changed to unsigned

Source/core/dom/NodeIteratorBase.cpp

 /*
  * 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 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 22 matching lines @@
 
 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(NodeIteratorBase);
 
 NodeIteratorBase::NodeIteratorBase(PassRefPtrWillBeRawPtr<Node> rootNode, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter> nodeFilter)
     : m_root(rootNode)
     , m_whatToShow(whatToShow)
     , m_filter(nodeFilter)
 {
 }
 
-short NodeIteratorBase::acceptNode(Node* node, ExceptionState& exceptionState) const
+unsigned NodeIteratorBase::acceptNode(Node* node, ExceptionState& exceptionState) const
 {
     // The bit twiddling here is done to map DOM node types, which are given as integers from
     // 1 through 14, to whatToShow bit masks.
     if (!(((1 << (node->nodeType() - 1)) & m_whatToShow)))
         return NodeFilter::FILTER_SKIP;
     if (!m_filter)
         return NodeFilter::FILTER_ACCEPT;
     return m_filter->acceptNode(node, exceptionState);
 }
 
 DEFINE_TRACE(NodeIteratorBase)
 {
     visitor->trace(m_root);
     visitor->trace(m_filter);
 }
 
 } // namespace blink