Smaller vtbls in RenderObject

Source/core/rendering/RenderMarquee.h

 /*
  * Copyright (C) 2003 Apple Computer, Inc.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 65 matching lines @@
 
     // FIXME: This function should be private and called at layout time.
     // However <marquee> tests are very timing dependent so we need to keep the existing timing.
     void updateMarqueePosition();
 
     void timerFired();
 
 private:
     virtual const char* renderName() const OVERRIDE;
 
-    virtual bool isMarquee() const OVERRIDE { return true; }
+    virtual bool isOfType(RenderObjectType type) const OVERRIDE { return type == RenderObjectMarquee || RenderBlockFlow::isOfType(type); }
 
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
 
     virtual void layoutBlock(bool relayoutChildren) OVERRIDE;
 
     int m_currentLoop;
     int m_totalLoops;
     Timer<HTMLMarqueeElement> m_timer;
     int m_start;
     int m_end;
     int m_speed;
     Length m_height;
     bool m_reset: 1;
     bool m_suspended : 1;
     bool m_stopped : 1;
     EMarqueeDirection m_direction : 4;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderMarquee, isMarquee());
 
 } // namespace blink
 
 #endif // RenderMarquee_h