Smaller vtbls in RenderObject

Source/core/rendering/svg/RenderSVGGradientStop.h

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 17 matching lines @@
 class SVGGradientElement;
 class SVGStopElement;
 
 // This class exists mostly so we can hear about gradient stop style changes
 class RenderSVGGradientStop final : public RenderObject {
 public:
     explicit RenderSVGGradientStop(SVGStopElement*);
     virtual ~RenderSVGGradientStop();
 
     virtual const char* renderName() const override { return "RenderSVGGradientStop"; }
-    virtual bool isSVGGradientStop() const override { return true; }
-    virtual bool isSVG() const override { return true; }
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectSVG || type == RenderObjectSVGGradientStop || RenderObject::isOfType(type); }
 
     virtual void layout() override;
 
     // This overrides are needed to prevent ASSERTs on <svg><stop /></svg>
     // RenderObject's default implementations ASSERT_NOT_REACHED()
     // https://bugs.webkit.org/show_bug.cgi?id=20400
     virtual LayoutRect clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject*, const PaintInvalidationState* = 0) const override { return LayoutRect(); }
     virtual FloatRect objectBoundingBox() const override { return FloatRect(); }
     virtual FloatRect strokeBoundingBox() const override { return FloatRect(); }
     virtual FloatRect paintInvalidationRectInLocalCoordinates() const override { return FloatRect(); }
 
 protected:
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
 
 private:
     SVGGradientElement* gradientElement() const;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGGradientStop, isSVGGradientStop());
 
 }
 
 #endif // RenderSVGGradientStop_h