Rename childNodeCount() / childNode() methods for clarity

Source/core/svg/SVGElementInstance.h

 /*
  * Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. 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 146 matching lines @@
 
     template<class GenericNode, class GenericNodeContainer>
     friend void appendChildToContainer(GenericNode& child, GenericNodeContainer&);
 
     template<class GenericNode, class GenericNodeContainer>
     friend void removeDetachedChildrenInContainer(GenericNodeContainer&);
 
     template<class GenericNode, class GenericNodeContainer>
     friend void Private::addChildNodesToDeletionQueue(GenericNode*& head, GenericNode*& tail, GenericNodeContainer&);
 
-    bool hasChildNodes() const { return m_firstChild; }
+    bool hasChildren() const { return m_firstChild; }
 
     void setFirstChild(SVGElementInstance* child) { m_firstChild = child; }
     void setLastChild(SVGElementInstance* child) { m_lastChild = child; }
 
     void setNextSibling(SVGElementInstance* sibling) { m_nextSibling = sibling; }
     void setPreviousSibling(SVGElementInstance* sibling) { m_previousSibling = sibling; }
 
     virtual EventTargetData* eventTargetData() OVERRIDE;
     virtual EventTargetData& ensureEventTargetData() OVERRIDE;
 
     SVGElementInstance* m_parentInstance;
 
     SVGUseElement* m_correspondingUseElement;
     SVGUseElement* m_directUseElement;
     RefPtr<SVGElement> m_element;
     RefPtr<SVGElement> m_shadowTreeElement;
 
     SVGElementInstance* m_previousSibling;
     SVGElementInstance* m_nextSibling;
 
     SVGElementInstance* m_firstChild;
     SVGElementInstance* m_lastChild;
 };
 
 } // namespace WebCore
 
 #endif