Replace RenderArena with PartitionAlloc

Source/core/html/HTMLImageElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * 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.
@@ skipping 125 matching lines @@
     if (alt.isNull())
         alt = getAttribute(titleAttr);
     return alt;
 }
 
 RenderObject* HTMLImageElement::createRenderer(RenderStyle* style)
 {
     if (style->hasContent())
         return RenderObject::createObject(this, style);
 
-    RenderImage* image = new (document()->renderArena()) RenderImage(this);
+    RenderImage* image = new RenderImage(this);
     image->setImageResource(RenderImageResource::create());
     return image;
 }
 
 bool HTMLImageElement::canStartSelection() const
 {
     if (shadow())
         return HTMLElement::canStartSelection();
 
     return false;
@@ skipping 194 matching lines @@
     const AtomicString& usemap = fastGetAttribute(usemapAttr);
 
     // If the usemap attribute starts with '#', it refers to a map element in the document.
     if (usemap.string()[0] == '#')
         return false;
 
     return document()->completeURL(stripLeadingAndTrailingHTMLSpaces(usemap)).isEmpty();
 }
 
 }