Replace RenderArena with PartitionAlloc.

Source/core/svg/SVGRadialGradientElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * 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 23 matching lines @@
 
     bool collectGradientAttributes(RadialGradientAttributes&);
 
 private:
     SVGRadialGradientElement(const QualifiedName&, Document*);
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&);
 
-    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
+    virtual RenderObject* createRenderer(RenderStyle*);
 
     virtual bool selfHasRelativeLengths() const;
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGRadialGradientElement)
         DECLARE_ANIMATED_LENGTH(Cx, cx)
         DECLARE_ANIMATED_LENGTH(Cy, cy)
         DECLARE_ANIMATED_LENGTH(R, r)
         DECLARE_ANIMATED_LENGTH(Fx, fx)
         DECLARE_ANIMATED_LENGTH(Fy, fy)
         DECLARE_ANIMATED_LENGTH(Fr, fr)
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
 } // namespace WebCore
 
 #endif