Replace RenderArena with PartitionAlloc.

Source/core/rendering/RenderRubyBase.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
 {
     setInline(false);
 }
 
 RenderRubyBase::~RenderRubyBase()
 {
 }
 
 RenderRubyBase* RenderRubyBase::createAnonymous(Document* document)
 {
-    RenderRubyBase* renderer = new (document->renderArena()) RenderRubyBase();
+    RenderRubyBase* renderer = new RenderRubyBase();
     renderer->setDocumentForAnonymous(document);
     return renderer;
 }
 
 bool RenderRubyBase::isChildAllowed(RenderObject* child, RenderStyle*) const
 {
     return child->isInline();
 }
 
 void RenderRubyBase::moveChildren(RenderRubyBase* toBase, RenderObject* beforeChild)
@@ skipping 87 matching lines @@
         return;
 
     // Inset the ruby base by half the inter-ideograph expansion amount.
     float inset = (logicalWidth - maxPreferredLogicalWidth) / (expansionOpportunityCount + 1);
 
     logicalLeft += inset / 2;
     logicalWidth -= inset;
 }
 
 } // namespace WebCore