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

Source/core/html/HTMLSpanElement.h

 /*
  * 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 14 matching lines @@
 
 #ifndef HTMLSpanElement_h
 #define HTMLSpanElement_h
 
 #include "core/html/HTMLElement.h"
 
 namespace WebCore {
 
 class HTMLSpanElement : public HTMLElement {
 public:
-    static PassRefPtrWillBeRawPtr<HTMLSpanElement> create(Document&);
+    DECLARE_NODE_FACTORY(HTMLSpanElement);
 
 protected:
     explicit HTMLSpanElement(Document&);
 };
 
 }
 
 #endif