Make ScriptStreamer and dependents Oilpan friendly.

Source/core/dom/PendingScript.cpp

 /*
  * Copyright (C) 2010 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:
  * 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 84 matching lines @@
         return;
     ASSERT(resource());
     if (m_streamer) {
         m_streamer->removeClient(client);
     } else {
         resource()->removeClient(client);
     }
     m_watchingForLoad = false;
 }
 
+void PendingScript::setElement(Element* element)
+{
+    m_element = element;
+}
+
 PassRefPtrWillBeRawPtr<Element> PendingScript::releaseElementAndClear()
 {
     setScriptResource(0);
     m_watchingForLoad = false;
     m_startingPosition = TextPosition::belowRangePosition();
     if (m_streamer)
         m_streamer->cancel();
     m_streamer.release();
     return m_element.release();
 }
@@ skipping 11 matching lines @@
 
 void PendingScript::notifyAppendData(ScriptResource* resource)
 {
     if (m_streamer)
         m_streamer->notifyAppendData(resource);
 }
 
 void PendingScript::trace(Visitor* visitor)
 {
     visitor->trace(m_element);
+    visitor->trace(m_streamer);
 }
 
 ScriptSourceCode PendingScript::getSource(const KURL& documentURL, bool& errorOccurred) const
 {
     if (resource()) {
         errorOccurred = resource()->errorOccurred();
         ASSERT(resource()->isLoaded());
         if (m_streamer && !m_streamer->streamingSuppressed())
             return ScriptSourceCode(m_streamer, resource());
         return ScriptSourceCode(resource());
     }
     errorOccurred = false;
     return ScriptSourceCode(m_element->textContent(), documentURL, startingPosition());
 }
 
-void PendingScript::setStreamer(PassRefPtr<ScriptStreamer> streamer)
+void PendingScript::setStreamer(PassRefPtrWillBeRawPtr<ScriptStreamer> streamer)
 {
     ASSERT(!m_streamer);
     ASSERT(!m_watchingForLoad);
     m_streamer = streamer;
 }
 
 bool PendingScript::isReady() const
 {
     if (resource() && !resource()->isLoaded())
         return false;
     if (m_streamer && !m_streamer->isFinished())
         return false;
     return true;
 }
 
 }