Apply FINAL to the RenderObject hierarchy.

Source/core/rendering/RenderFrameSet.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2006, 2008 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 35 matching lines @@
     bool allowBorder(FrameEdge edge) const { return m_allowBorder[edge]; }
 
     void setPreventResize(FrameEdge edge, bool preventResize) { m_preventResize[edge] = preventResize; }
     void setAllowBorder(FrameEdge edge, bool allowBorder) { m_allowBorder[edge] = allowBorder; }
 
 private:
     Vector<bool> m_preventResize;
     Vector<bool> m_allowBorder;
 };
 
-class RenderFrameSet : public RenderBox {
+class RenderFrameSet FINAL : public RenderBox {
 public:
     RenderFrameSet(HTMLFrameSetElement*);
     virtual ~RenderFrameSet();
 
     RenderObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
     RenderObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
 
     const RenderObjectChildList* children() const { return &m_children; }
     RenderObjectChildList* children() { return &m_children; }
 
@@ skipping 77 matching lines @@
     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isFrameSet());
     return static_cast<RenderFrameSet*>(object);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toRenderFrameSet(const RenderFrameSet*);
 
 } // namespace WebCore
 
 #endif // RenderFrameSet_h