Smaller vtbls in RenderObject

Source/core/rendering/RenderImage.h

Index: Source/core/rendering/RenderImage.h
diff --git a/Source/core/rendering/RenderImage.h b/Source/core/rendering/RenderImage.h
index 87f1b8960a99bcbf3650068572308c846cd8c2f9..6c5c128f900015fe33ef1c18809117edbb836949 100644
--- a/Source/core/rendering/RenderImage.h
+++ b/Source/core/rendering/RenderImage.h
@@ -84,11 +84,12 @@ protected:
     virtual void layout() override;
     virtual bool updateImageLoadingPriorities() override final;
 
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectRenderImage || RenderReplaced::isOfType(type); }
+
 private:
     virtual const char* renderName() const override { return "RenderImage"; }
 
     virtual bool isImage() const override { return true; }
-    virtual bool isRenderImage() const override final { return true; }
 
     virtual void paintReplaced(PaintInfo&, const LayoutPoint&) override;