Replace RenderArena with PartitionAlloc.

Source/core/html/HTMLIFrameElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann (hausmann@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Ericsson AB. 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
@@ skipping 85 matching lines @@
             contentDocument()->styleResolverChanged(DeferRecalcStyle);
     } else
         HTMLFrameElementBase::parseAttribute(name, value);
 }
 
 bool HTMLIFrameElement::rendererIsNeeded(const NodeRenderingContext& context)
 {
     return isURLAllowed() && context.style()->display() != NONE;
 }
 
-RenderObject* HTMLIFrameElement::createRenderer(RenderArena* arena, RenderStyle*)
+RenderObject* HTMLIFrameElement::createRenderer(RenderStyle*)
 {
-    return new (arena) RenderIFrame(this);
+    return new RenderIFrame(this);
 }
 
 Node::InsertionNotificationRequest HTMLIFrameElement::insertedInto(ContainerNode* insertionPoint)
 {
     InsertionNotificationRequest result = HTMLFrameElementBase::insertedInto(insertionPoint);
     if (insertionPoint->inDocument() && document()->isHTMLDocument() && !insertionPoint->isInShadowTree())
         toHTMLDocument(document())->addExtraNamedItem(m_name);
     return result;
 }
 
@@ skipping 12 matching lines @@
 void HTMLIFrameElement::didRecalcStyle(StyleChange styleChange)
 {
     if (!shouldDisplaySeamlessly())
         return;
     Document* childDocument = contentDocument();
     if (shouldRecalcStyle(styleChange, childDocument))
         contentDocument()->recalcStyle(styleChange);
 }
 
 }