Replace RenderArena with PartitionAlloc.

Source/core/rendering/RenderFullScreen.cpp

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 40 matching lines @@
 
 RenderFullScreen::RenderFullScreen()
     : RenderFlexibleBox(0)
     , m_placeholder(0)
 {
     setReplaced(false); 
 }
 
 RenderFullScreen* RenderFullScreen::createAnonymous(Document* document)
 {
-    RenderFullScreen* renderer = new (document->renderArena()) RenderFullScreen();
+    RenderFullScreen* renderer = new RenderFullScreen();
     renderer->setDocumentForAnonymous(document);
     return renderer;
 }
 
 void RenderFullScreen::willBeDestroyed()
 {
     if (m_placeholder) {
         remove();
         if (!m_placeholder->beingDestroyed())
             m_placeholder->destroy();
@@ skipping 99 matching lines @@
 }
 
 void RenderFullScreen::createPlaceholder(PassRefPtr<RenderStyle> style, const LayoutRect& frameRect)
 {
     if (style->width().isAuto())
         style->setWidth(Length(frameRect.width(), Fixed));
     if (style->height().isAuto())
         style->setHeight(Length(frameRect.height(), Fixed));
 
     if (!m_placeholder) {
-        m_placeholder = new (document()->renderArena()) RenderFullScreenPlaceholder(this);
+        m_placeholder = new RenderFullScreenPlaceholder(this);
         m_placeholder->setStyle(style);
         if (parent()) {
             parent()->addChild(m_placeholder, this);
             parent()->setNeedsLayoutAndPrefWidthsRecalc();
         }
     } else
         m_placeholder->setStyle(style);
 }