Replace RenderArena with PartitionAlloc.

Source/core/html/HTMLElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Motorola Mobility. 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
@@ skipping 717 matching lines @@
         if (frame && frame->script()->canExecuteScripts(NotAboutToExecuteScript))
             return false;
     } else if (hasLocalName(noembedTag)) {
         Frame* frame = document()->frame();
         if (frame && frame->loader()->subframeLoader()->allowPlugins(NotAboutToInstantiatePlugin))
             return false;
     }
     return StyledElement::rendererIsNeeded(context);
 }
 
-RenderObject* HTMLElement::createRenderer(RenderArena* arena, RenderStyle* style)
+RenderObject* HTMLElement::createRenderer(RenderStyle* style)
 {
     if (hasLocalName(wbrTag))
-        return new (arena) RenderWordBreak(this);
+        return new RenderWordBreak(this);
     return RenderObject::createObject(this, style);
 }
 
 HTMLFormElement* HTMLElement::findFormAncestor() const
 {
     for (ContainerNode* ancestor = parentNode(); ancestor; ancestor = ancestor->parentNode()) {
         if (ancestor->hasTagName(formTag))
             return static_cast<HTMLFormElement*>(ancestor);
     }
     return 0;
@@ skipping 282 matching lines @@
 #ifndef NDEBUG
 
 // For use in the debugger
 void dumpInnerHTML(WebCore::HTMLElement*);
 
 void dumpInnerHTML(WebCore::HTMLElement* element)
 {
     printf("%s\n", element->innerHTML().ascii().data());
 }
 #endif