Remove unused getSubresourceURLs function

Source/core/dom/Node.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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 187 matching lines @@
     Element* previousElementSibling() const;
     Element* nextElementSibling() const;
     void remove(ExceptionCode&);
 
     Node* pseudoAwareNextSibling() const;
     Node* pseudoAwarePreviousSibling() const;
     Node* pseudoAwareFirstChild() const;
     Node* pseudoAwareLastChild() const;
 
     virtual KURL baseURI() const;
-    
-    void getSubresourceURLs(ListHashSet<KURL>&) const;
 
     // These should all actually return a node, but this is only important for language bindings,
     // which will already know and hold a ref on the right node to return. Returning bool allows
     // these methods to be more efficient since they don't need to return a ref
     void insertBefore(PassRefPtr<Node> newChild, Node* refChild, ExceptionCode&, AttachBehavior = AttachNow);
     void replaceChild(PassRefPtr<Node> newChild, Node* oldChild, ExceptionCode&, AttachBehavior = AttachNow);
     void removeChild(Node* child, ExceptionCode&);
     void appendChild(PassRefPtr<Node> newChild, ExceptionCode&, AttachBehavior = AttachNow);
 
     bool hasChildNodes() const { return firstChild(); }
@@ skipping 725 matching lines @@
 
 } //namespace
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::Node*);
 void showNodePath(const WebCore::Node*);
 #endif
 
 #endif