Smaller vtbls in RenderObject

Source/core/rendering/RenderVideo.h

 /*
  * Copyright (C) 2007, 2009, 2010 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 40 matching lines @@
     virtual void updateFromElement() override;
 
     virtual void intrinsicSizeChanged() override;
     LayoutSize calculateIntrinsicSize();
     void updateIntrinsicSize();
 
     virtual void imageChanged(WrappedImagePtr, const IntRect*) override;
 
     virtual const char* renderName() const override { return "RenderVideo"; }
 
-    virtual bool isVideo() const override { return true; }
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectVideo || RenderMedia::isOfType(type); }
 
     virtual void paintReplaced(PaintInfo&, const LayoutPoint&) override;
 
     virtual void layout() override;
 
     virtual LayoutUnit computeReplacedLogicalWidth(ShouldComputePreferred  = ComputeActual) const override;
     virtual LayoutUnit computeReplacedLogicalHeight() const override;
     virtual LayoutUnit minimumReplacedHeight() const override;
 
     virtual LayoutUnit offsetLeft() const override;
     virtual LayoutUnit offsetTop() const override;
     virtual LayoutUnit offsetWidth() const override;
     virtual LayoutUnit offsetHeight() const override;
 
     virtual CompositingReasons additionalCompositingReasons() const override;
 
     void updatePlayer();
 
 
     LayoutSize m_cachedImageSize;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderVideo, isVideo());
 
 } // namespace blink
 
 #endif // RenderVideo_h