Apply FINAL to the RenderObject hierarchy.

Source/core/rendering/RenderTableCol.h

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 15 matching lines @@
 #ifndef RenderTableCol_h
 #define RenderTableCol_h
 
 #include "RenderBox.h"
 
 namespace WebCore {
 
 class RenderTable;
 class RenderTableCell;
 
-class RenderTableCol : public RenderBox {
+class RenderTableCol FINAL : public RenderBox {
 public:
     explicit RenderTableCol(Element*);
 
     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; }
 
     void clearPreferredLogicalWidthsDirtyBits();
@@ skipping 69 matching lines @@
     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderTableCol());
     return static_cast<const RenderTableCol*>(object);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toRenderTableCol(const RenderTableCol*);
 
 }
 
 #endif