Replace RenderArena with PartitionAlloc

Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 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 477 matching lines @@
     }
 }
 
 bool HTMLMediaElement::rendererIsNeeded(const NodeRenderingContext& context)
 {
     return controls() ? HTMLElement::rendererIsNeeded(context) : false;
 }
 
 RenderObject* HTMLMediaElement::createRenderer(RenderStyle*)
 {
-    return new (document()->renderArena()) RenderMedia(this);
+    return new RenderMedia(this);
 }
 
 bool HTMLMediaElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
 {
     return hasMediaControls() && HTMLElement::childShouldCreateRenderer(childContext);
 }
 
 Node::InsertionNotificationRequest HTMLMediaElement::insertedInto(ContainerNode* insertionPoint)
 {
     LOG(Media, "HTMLMediaElement::insertedInto");
@@ skipping 3448 matching lines @@
 {
     m_restrictions = NoRestrictions;
 }
 
 void HTMLMediaElement::mediaPlayerScheduleLayerUpdate()
 {
     scheduleLayerUpdate();
 }
 
 }