Generate isHTML*Element() / toHTML*Element() helper functions

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013 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 650 matching lines @@
     void detachAllAttrNodesFromElement();
     void detachAttrNodeFromElementWithValue(Attr*, const AtomicString& value);
     void detachAttrNodeAtIndex(Attr*, size_t index);
 
     bool isJavaScriptURLAttribute(const Attribute&) const;
 
     RefPtr<ElementData> m_elementData;
 };
 
 DEFINE_NODE_TYPE_CASTS(Element, isElementNode());
+template <typename T> bool isElementOfType(const Element&);
+template <typename T> inline bool isElementOfType(const Node& node) { return node.isElementNode() && isElementOfType<const T>(toElement(node)); }
+template <> inline bool isElementOfType<const Element>(const Element&) { return true; }
 
 inline bool isDisabledFormControl(const Node* node)
 {
     return node->isElementNode() && toElement(node)->isDisabledFormControl();
 }
 
 inline bool Node::hasTagName(const QualifiedName& name) const
 {
     return isElementNode() && toElement(this)->hasTagName(name);
 }
@@ skipping 174 matching lines @@
 }
 
 inline bool isShadowHost(const Element* element)
 {
     return element && element->shadow();
 }
 
 } // namespace
 
 #endif