Oilpan: make DOMWindowProperty a GC mixin.

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 28 matching lines @@
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/SecurityOrigin.h"
 
 namespace blink {
 
 Location::Location(LocalFrame* frame)
     : DOMWindowProperty(frame)
 {
 }
 
+void Location::trace(Visitor* visitor)
+{
+    DOMWindowProperty::trace(visitor);
+}
+
 inline const KURL& Location::url() const
 {
     ASSERT(m_frame);
 
     const KURL& url = m_frame->document()->url();
     if (!url.isValid())
         return blankURL(); // Use "about:blank" while the page is still loading (before we have a frame).
 
     return url;
 }
@@ skipping 185 matching lines @@
 void Location::setLocation(const String& url, LocalDOMWindow* callingWindow, LocalDOMWindow* enteredWindow)
 {
     ASSERT(m_frame);
     LocalFrame* frame = m_frame->loader().findFrameForNavigation(nullAtom, callingWindow->document());
     if (!frame)
         return;
     frame->domWindow()->setLocation(url, callingWindow, enteredWindow);
 }
 
 } // namespace blink