Smaller vtbls in RenderObject

Source/core/rendering/svg/RenderSVGText.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved.
  *
  * 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.
  *
@@ skipping 42 matching lines @@
     void subtreeChildWasAdded(RenderObject*);
     void subtreeChildWillBeRemoved(RenderObject*, Vector<SVGTextLayoutAttributes*, 2>& affectedAttributes);
     void subtreeChildWasRemoved(const Vector<SVGTextLayoutAttributes*, 2>& affectedAttributes);
     void subtreeStyleDidChange();
     void subtreeTextDidChange(RenderSVGInlineText*);
 
     virtual const AffineTransform& localToParentTransform() const override { return m_localTransform; }
 
 private:
     virtual const char* renderName() const override { return "RenderSVGText"; }
-    virtual bool isSVGText() const override { return true; }
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectSVGText || RenderSVGBlock::isOfType(type); }
 
     virtual void paint(PaintInfo&, const LayoutPoint&) override;
     virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction) override;
     virtual PositionWithAffinity positionForPoint(const LayoutPoint&) override;
 
     virtual void layout() override;
 
     virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override;
 
     virtual void mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect&, const PaintInvalidationState*) const override;
@@ skipping 15 matching lines @@
     bool m_needsTextMetricsUpdate : 1;
     SVGTextLayoutAttributesBuilder m_layoutAttributesBuilder;
     Vector<SVGTextLayoutAttributes*> m_layoutAttributes;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGText, isSVGText());
 
 }
 
 #endif