[SVG2] Elements that don't render shouldn't contribute to ancestor bboxes.

Source/core/rendering/svg/RenderSVGPath.h

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2006 Apple Computer, Inc
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
  * Copyright (C) 2011 University of Szeged
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 17 matching lines @@
 
 #include "core/rendering/svg/RenderSVGShape.h"
 
 namespace WebCore {
 
 class RenderSVGPath FINAL : public RenderSVGShape {
 public:
     explicit RenderSVGPath(SVGGraphicsElement*);
     virtual ~RenderSVGPath();
 
+    virtual bool isRenderingDisabled() const OVERRIDE;
+
 private:
     virtual bool isSVGPath() const OVERRIDE { return true; }
     virtual const char* renderName() const OVERRIDE { return "RenderSVGPath"; }
 
     virtual void updateShapeFromElement() OVERRIDE;
     FloatRect calculateUpdatedStrokeBoundingBox() const;
 
     virtual void strokeShape(GraphicsContext*) const OVERRIDE;
     virtual bool shapeDependentStrokeContains(const FloatPoint&) OVERRIDE;
 
     bool shouldStrokeZeroLengthSubpath() const;
     Path* zeroLengthLinecapPath(const FloatPoint&) const;
     FloatRect zeroLengthSubpathRect(const FloatPoint&, float) const;
     void updateZeroLengthSubpaths();
 
     Vector<FloatPoint> m_zeroLengthLinecapLocations;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGPath, isSVGPath());
 
 }
 
 #endif