FINALizing of the Node hierarchy.

Source/core/html/shadow/HTMLShadowElement.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 18 matching lines @@
  */
 
 #ifndef HTMLShadowElement_h
 #define HTMLShadowElement_h
 
 #include "InsertionPoint.h"
 #include <wtf/Forward.h>
 
 namespace WebCore {
 
-class HTMLShadowElement : public InsertionPoint {
+class HTMLShadowElement FINAL : public InsertionPoint {
 public:
     static PassRefPtr<HTMLShadowElement> create(const QualifiedName&, Document*);
 
     virtual ~HTMLShadowElement();
 
     virtual Type insertionPointType() const OVERRIDE { return ShadowInsertionPoint; }
 
     ShadowRoot* olderShadowRoot();
 
 private:
@@ skipping 13 matching lines @@
 }
 
 inline const HTMLShadowElement* toHTMLShadowElement(const Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || isHTMLShadowElement(node));
     return static_cast<const HTMLShadowElement*>(node);
 }
 } // namespace WebCore
 
 #endif // HTMLShadowElement_h