Replace RenderArena with PartitionAlloc.

Source/core/html/HTMLSummaryElement.cpp

 /*
  * Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 29 matching lines @@
     summary->ensureUserAgentShadowRoot();
     return summary.release();
 }
 
 HTMLSummaryElement::HTMLSummaryElement(const QualifiedName& tagName, Document* document)
     : HTMLElement(tagName, document)
 {
     ASSERT(hasTagName(summaryTag));
 }
 
-RenderObject* HTMLSummaryElement::createRenderer(RenderArena* arena, RenderStyle*)
+RenderObject* HTMLSummaryElement::createRenderer(RenderStyle*)
 {
-    return new (arena) RenderBlock(this);
+    return new RenderBlock(this);
 }
 
 bool HTMLSummaryElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
 {
     if (childContext.node()->isPseudoElement())
         return true;
     return childContext.isOnEncapsulationBoundary() && HTMLElement::childShouldCreateRenderer(childContext);
 }
 
 void HTMLSummaryElement::didAddUserAgentShadowRoot(ShadowRoot* root)
@@ skipping 76 matching lines @@
 
 bool HTMLSummaryElement::willRespondToMouseClickEvents()
 {
     if (isMainSummary() && renderer())
         return true;
 
     return HTMLElement::willRespondToMouseClickEvents();
 }
 
 }