FINALizing of the Node hierarchy.

Source/core/html/HTMLDialogElement.h

 /*
  * Copyright (C) 2012 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
@@ skipping 15 matching lines @@
 #ifndef HTMLDialogElement_h
 #define HTMLDialogElement_h
 
 #include "HTMLElement.h"
 
 namespace WebCore {
 
 class Document;
 class QualifiedName;
 
-class HTMLDialogElement : public HTMLElement {
+class HTMLDialogElement FINAL : public HTMLElement {
 public:
     static PassRefPtr<HTMLDialogElement> create(const QualifiedName&, Document*);
 
     void close(ExceptionCode&);
     void show();
     void showModal(ExceptionCode&);
 
 private:
     HTMLDialogElement(const QualifiedName&, Document*);
 
     virtual PassRefPtr<RenderStyle> customStyleForRenderer() OVERRIDE;
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     void positionAndReattach();
 
     bool m_topIsValid;
     LayoutUnit m_top;
 };
 
 } // namespace WebCore
 
 #endif