Apply DEFINE/DECLARE_NODE_FACTORY(T) macro to element factories with single Document& argument.

Source/core/html/HTMLSpanElement.cpp

 /*
  * Copyright (C) 2011 Google, Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
 namespace WebCore {
 
 using namespace HTMLNames;
 
 HTMLSpanElement::HTMLSpanElement(Document& document)
     : HTMLElement(spanTag, document)
 {
     ScriptWrappable::init(this);
 }
 
-PassRefPtrWillBeRawPtr<HTMLSpanElement> HTMLSpanElement::create(Document& document)
-{
-    return adoptRefWillBeRefCountedGarbageCollected(new HTMLSpanElement(document));
-}
+DEFINE_NODE_FACTORY(HTMLSpanElement)
 
 }