Smaller vtbls in RenderObject

Source/core/rendering/svg/RenderSVGHiddenContainer.h

Index: Source/core/rendering/svg/RenderSVGHiddenContainer.h
diff --git a/Source/core/rendering/svg/RenderSVGHiddenContainer.h b/Source/core/rendering/svg/RenderSVGHiddenContainer.h
index 8eadefa70d98ff938193624ea148ff83a1e21275..1b627f51e67d8021c9ce8478b04a3837d16b1d84 100644
--- a/Source/core/rendering/svg/RenderSVGHiddenContainer.h
+++ b/Source/core/rendering/svg/RenderSVGHiddenContainer.h
@@ -37,11 +37,10 @@ public:
 protected:
     virtual void layout() override;
 
-private:
-    virtual bool isSVGHiddenContainer() const override final { return true; }
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectSVGHiddenContainer || RenderSVGContainer::isOfType(type); }
 
+private:
     virtual void paint(PaintInfo&, const LayoutPoint&) override final;
-
     virtual LayoutRect clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject*, const PaintInvalidationState* = 0) const override final { return LayoutRect(); }
     virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override final;