Oilpan: move Screen and its supplement to the oilpan heap.

Source/core/frame/Screen.h

 /*
  * Copyright (C) 2007 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 15 matching lines @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 
 #ifndef Screen_h
 #define Screen_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/events/EventTarget.h"
 #include "core/frame/DOMWindowProperty.h"
+#include "heap/Handle.h"
 #include "platform/Supplementable.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
     class LocalFrame;
 
-    class Screen FINAL : public ScriptWrappable, public RefCounted<Screen>, public EventTargetWithInlineData, public DOMWindowProperty, public Supplementable<Screen> {
-        REFCOUNTED_EVENT_TARGET(Screen);
+    class Screen FINAL : public RefCountedWillBeRefCountedGarbageCollected<Screen>, public ScriptWrappable, public EventTargetWithInlineData, public DOMWindowProperty, public WillBeHeapSupplementable<Screen> {
+        WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Screen);
+        DEFINE_EVENT_TARGET_REFCOUNTING(RefCountedWillBeRefCountedGarbageCollected<Screen>);
     public:
-        static PassRefPtr<Screen> create(LocalFrame* frame) { return adoptRef(new Screen(frame)); }
+        static PassRefPtrWillBeRawPtr<Screen> create(LocalFrame* frame)
+        {
+            return adoptRefWillBeRefCountedGarbageCollected(new Screen(frame));
+        }
 
         unsigned height() const;
         unsigned width() const;
         unsigned colorDepth() const;
         unsigned pixelDepth() const;
         int availLeft() const;
         int availTop() const;
         unsigned availHeight() const;
         unsigned availWidth() const;
 
         // EventTarget.
         virtual const AtomicString& interfaceName() const OVERRIDE;
         virtual ExecutionContext* executionContext() const OVERRIDE;
 
+        void trace(Visitor*);
+
     private:
         explicit Screen(LocalFrame*);
     };
 
 } // namespace WebCore
 
 #endif // Screen_h