Smaller vtbls in RenderObject

Source/core/rendering/svg/RenderSVGContainer.h

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) 2009 Apple Inc. 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 36 matching lines @@
     virtual bool didTransformToRootUpdate() { return false; }
     bool isObjectBoundingBoxValid() const { return m_objectBoundingBoxValid; }
 
     virtual FloatRect paintInvalidationRectInLocalCoordinates() const override final { return m_paintInvalidationBoundingBox; }
     bool selfWillPaint();
 
 protected:
     virtual RenderObjectChildList* virtualChildren() override final { return children(); }
     virtual const RenderObjectChildList* virtualChildren() const override final { return children(); }
 
-    virtual bool isSVGContainer() const override final { return true; }
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectSVGContainer || RenderSVGModelObject::isOfType(type); }
     virtual const char* renderName() const override { return "RenderSVGContainer"; }
 
     virtual void layout() override;
 
     virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) override final;
     virtual void removeChild(RenderObject*) override final;
     virtual void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer) const override final;
 
     virtual FloatRect objectBoundingBox() const override final { return m_objectBoundingBox; }
     virtual FloatRect strokeBoundingBox() const override final { return m_strokeBoundingBox; }
@@ skipping 21 matching lines @@
     FloatRect m_strokeBoundingBox;
     FloatRect m_paintInvalidationBoundingBox;
     bool m_needsBoundariesUpdate : 1;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGContainer, isSVGContainer());
 
 } // namespace blink
 
 #endif // RenderSVGContainer_h