Revert of Enable Oilpan by default in modules/speech/

Source/modules/speech/SpeechGrammarList.cpp

 /*
  * Copyright (C) 2012 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 copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #include "config.h"
 
 #include "modules/speech/SpeechGrammarList.h"
 
 #include "core/dom/Document.h"
 
 namespace WebCore {
 
-SpeechGrammarList* SpeechGrammarList::create()
+PassRefPtrWillBeRawPtr<SpeechGrammarList> SpeechGrammarList::create()
 {
-    return new SpeechGrammarList;
+    return adoptRefWillBeNoop(new SpeechGrammarList);
 }
 
 SpeechGrammar* SpeechGrammarList::item(unsigned long index) const
 {
     if (index >= m_grammars.size())
         return 0;
 
     return m_grammars[index].get();
 }
 
@@ skipping 13 matching lines @@
 {
     ScriptWrappable::init(this);
 }
 
 void SpeechGrammarList::trace(Visitor* visitor)
 {
     visitor->trace(m_grammars);
 }
 
 } // namespace WebCore