Apply FINAL to the RenderObject hierarchy.

Source/core/rendering/RenderRubyBase.h

 /*
  * Copyright (C) 2009 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 19 matching lines @@
 
 #ifndef RenderRubyBase_h
 #define RenderRubyBase_h
 
 #include "RenderBlock.h"
 
 namespace WebCore {
 
 class RenderRubyRun;
 
-class RenderRubyBase : public RenderBlock {
+class RenderRubyBase FINAL : public RenderBlock {
 public:
     virtual ~RenderRubyBase();
     
     static RenderRubyBase* createAnonymous(Document*);
 
     virtual const char* renderName() const { return "RenderRubyBase (anonymous)"; }
 
     virtual bool isRubyBase() const { return true; }
 
     virtual bool isChildAllowed(RenderObject*, RenderStyle*) const;
@@ skipping 10 matching lines @@
 
     RenderRubyRun* rubyRun() const;
 
     // Allow RenderRubyRun to manipulate the children within ruby bases.
     friend class RenderRubyRun;
 };
 
 } // namespace WebCore
 
 #endif // RenderRubyBase_h