Oilpan: move DOM string collection objects to the Oilpan heap.

Source/core/frame/Location.cpp

 /*
  * Copyright (C) 2008, 2010 Apple 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
@@ skipping 97 matching lines @@
     return DOMURLUtilsReadOnly::search(url());
 }
 
 String Location::origin() const
 {
     if (!m_frame)
         return String();
     return DOMURLUtilsReadOnly::origin(url());
 }
 
-PassRefPtr<DOMStringList> Location::ancestorOrigins() const
+PassRefPtrWillBeRawPtr<DOMStringList> Location::ancestorOrigins() const
 {
-    RefPtr<DOMStringList> origins = DOMStringList::create();
+    RefPtrWillBeRawPtr<DOMStringList> origins = DOMStringList::create();
     if (!m_frame)
         return origins.release();
     for (LocalFrame* frame = m_frame->tree().parent(); frame; frame = frame->tree().parent())
         origins->append(frame->document()->securityOrigin()->toString());
     return origins.release();
 }
 
 String Location::hash() const
 {
     if (!m_frame)
@@ skipping 111 matching lines @@
 void Location::setLocation(const String& url, DOMWindow* callingWindow, DOMWindow* enteredWindow)
 {
     ASSERT(m_frame);
     LocalFrame* frame = m_frame->loader().findFrameForNavigation(nullAtom, callingWindow->document());
     if (!frame)
         return;
     frame->domWindow()->setLocation(url, callingWindow, enteredWindow);
 }
 
 } // namespace WebCore