Smaller vtbls in RenderObject

Source/core/rendering/svg/RenderSVGBlock.h

Index: Source/core/rendering/svg/RenderSVGBlock.h
diff --git a/Source/core/rendering/svg/RenderSVGBlock.h b/Source/core/rendering/svg/RenderSVGBlock.h
index 2f0314fab351013954bbee794e331972437130d6..6dd6575fa84491d812825cc4be3da4e77e0d225a 100644
--- a/Source/core/rendering/svg/RenderSVGBlock.h
+++ b/Source/core/rendering/svg/RenderSVGBlock.h
@@ -49,11 +49,10 @@ protected:
 
     AffineTransform m_localTransform;
 
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectSVG || RenderBlockFlow::isOfType(type); }
 private:
     virtual void updateFromStyle() override final;
 
-    virtual bool isSVG() const override final { return true; }
-
     virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const override final;
 
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override final;