Smaller vtbls in RenderObject

Source/core/rendering/RenderProgress.h

 /*
  * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 26 matching lines @@
     double animationProgress() const;
     double animationStartTime() const { return m_animationStartTime; }
 
     bool isDeterminate() const;
     virtual void updateFromElement() OVERRIDE;
 
     HTMLProgressElement* progressElement() const;
 
 private:
     virtual const char* renderName() const OVERRIDE { return "RenderProgress"; }
-    virtual bool isProgress() const OVERRIDE { return true; }
+    virtual bool isOfType(RenderObjectType type) const OVERRIDE { return type == RenderObjectProgress || RenderBlockFlow::isOfType(type); }
 
     void animationTimerFired(Timer<RenderProgress>*);
     void updateAnimationState();
 
     double m_position;
     double m_animationStartTime;
     double m_animationRepeatInterval;
     double m_animationDuration;
     bool m_animating;
     Timer<RenderProgress> m_animationTimer;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderProgress, isProgress());
 
 } // namespace blink
 
 #endif // RenderProgress_h