Make ScriptStreamer and dependents Oilpan friendly.

Source/core/dom/PendingScript.cpp

Index: Source/core/dom/PendingScript.cpp
diff --git a/Source/core/dom/PendingScript.cpp b/Source/core/dom/PendingScript.cpp
index dfc99c7d3bf6f586db2b5df5891f25593f91a1ad..3227d2ba8dccd71ea9ca9ee7433750908558d306 100644
--- a/Source/core/dom/PendingScript.cpp
+++ b/Source/core/dom/PendingScript.cpp
@@ -102,6 +102,11 @@ void PendingScript::stopWatchingForLoad(ScriptResourceClient* client)
     m_watchingForLoad = false;
 }
 
+void PendingScript::setElement(Element* element)
+{
+    m_element = element;
+}
+
 PassRefPtrWillBeRawPtr<Element> PendingScript::releaseElementAndClear()
 {
     setScriptResource(0);
@@ -133,6 +138,7 @@ void PendingScript::notifyAppendData(ScriptResource* resource)
 void PendingScript::trace(Visitor* visitor)
 {
     visitor->trace(m_element);
+    visitor->trace(m_streamer);
 }
 
 ScriptSourceCode PendingScript::getSource(const KURL& documentURL, bool& errorOccurred) const
@@ -148,7 +154,7 @@ ScriptSourceCode PendingScript::getSource(const KURL& documentURL, bool& errorOc
     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);