Intorudce DECLARE/DEFINE_ELEMENT_FACTORY_WITH_TAGNAME macros.

Source/core/html/HTMLPreElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2010 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 11 matching lines @@
 
 #ifndef HTMLPreElement_h
 #define HTMLPreElement_h
 
 #include "core/html/HTMLElement.h"
 
 namespace WebCore {
 
 class HTMLPreElement FINAL : public HTMLElement {
 public:
-    static PassRefPtrWillBeRawPtr<HTMLPreElement> create(const QualifiedName&, Document&);
+    DECLARE_ELEMENT_FACTORY_WITH_TAGNAME(HTMLPreElement);
 
 private:
     HTMLPreElement(const QualifiedName&, Document&);
 
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
 };
 
 } // namespace WebCore
 
 #endif // HTMLPreElement_h