Replace RenderArena with PartitionAlloc

Source/core/svg/SVGGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 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 74 matching lines @@
         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
 }
 
 RenderObject* SVGGElement::createRenderer(RenderStyle* style)
 {
     // SVG 1.1 testsuite explicitely uses constructs like <g display="none"><linearGradient>
     // We still have to create renderers for the <g> & <linearGradient> element, though the
     // subtree may be hidden - we only want the resource renderers to exist so they can be
     // referenced from somewhere else.
     if (style->display() == NONE)
-        return new (document()->renderArena()) RenderSVGHiddenContainer(this);
+        return new RenderSVGHiddenContainer(this);
 
-    return new (document()->renderArena()) RenderSVGTransformableContainer(this);
+    return new RenderSVGTransformableContainer(this);
 }
 
 bool SVGGElement::rendererIsNeeded(const NodeRenderingContext&)
 {
     // Unlike SVGStyledElement::rendererIsNeeded(), we still create renderers, even if
     // display is set to 'none' - which is special to SVG <g> container elements.
     return parentOrShadowHostElement() && parentOrShadowHostElement()->isSVGElement();
 }
 
 }