Smaller vtbls in RenderObject

Source/core/rendering/svg/RenderSVGForeignObject.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2009 Google, Inc.
  *
  * 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,
@@ skipping 28 matching lines @@
     virtual void paint(PaintInfo&, const LayoutPoint&) override;
 
     virtual void layout() override;
 
     virtual FloatRect objectBoundingBox() const override { return FloatRect(FloatPoint(), m_viewport.size()); }
     virtual FloatRect strokeBoundingBox() const override { return FloatRect(FloatPoint(), m_viewport.size()); }
     virtual FloatRect paintInvalidationRectInLocalCoordinates() const override { return FloatRect(FloatPoint(), m_viewport.size()); }
 
     virtual void mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect&, const PaintInvalidationState*) const override;
     virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction) override;
-    virtual bool isSVGForeignObject() const override { return true; }
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectSVGForeignObject || RenderSVGBlock::isOfType(type); }
 
     virtual void setNeedsTransformUpdate() override { m_needsTransformUpdate = true; }
 
     FloatRect viewportRect() { return m_viewport; }
 
 private:
     virtual void updateLogicalWidth() override;
     virtual void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const override;
 
     virtual const AffineTransform& localToParentTransform() const override;
 
     bool m_needsTransformUpdate : 1;
     FloatRect m_viewport;
     mutable AffineTransform m_localToParentTransform;
 };
 
 }
 
 #endif