Replace RenderArena with PartitionAlloc.

Source/core/rendering/InlineIterator.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010 Apple Inc. All right reserved.
  * Copyright (C) 2010 Google Inc. 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 426 matching lines @@
         object = object->parent();
     }
     return count;
 }
 
 // FIXME: This belongs on InlineBidiResolver, except it's a template specialization
 // of BidiResolver which knows nothing about RenderObjects.
 static inline void addPlaceholderRunForIsolatedInline(InlineBidiResolver& resolver, RenderObject* obj, unsigned pos)
 {
     ASSERT(obj);
-    BidiRun* isolatedRun = new (obj->renderArena()) BidiRun(pos, 0, obj, resolver.context(), resolver.dir());
+    BidiRun* isolatedRun = new BidiRun(pos, 0, obj, resolver.context(), resolver.dir());
     resolver.runs().addRun(isolatedRun);
     // FIXME: isolatedRuns() could be a hash of object->run and then we could cheaply
     // ASSERT here that we didn't create multiple objects for the same inline.
     resolver.isolatedRuns().append(isolatedRun);
 }
 
 class IsolateTracker {
 public:
     explicit IsolateTracker(unsigned nestedIsolateCount)
         : m_nestedIsolateCount(nestedIsolateCount)
@@ skipping 79 matching lines @@
         m_sor = m_eor;
     }
 
     m_direction = WTF::Unicode::OtherNeutral;
     m_status.eor = WTF::Unicode::OtherNeutral;
 }
 
 }
 
 #endif // InlineIterator_h