Oilpan: turn DOMWindow into a heap supplementable.

Source/modules/indexeddb/DOMWindowIndexedDatabase.h

 /*
  * Copyright (C) 2011, 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 17 matching lines @@
 
 #include "core/frame/DOMWindowProperty.h"
 #include "modules/indexeddb/IDBFactoryBackendInterface.h"
 #include "platform/Supplementable.h"
 
 namespace WebCore {
 
 class IDBFactory;
 class DOMWindow;
 
-class DOMWindowIndexedDatabase FINAL : public DOMWindowProperty, public Supplement<DOMWindow> {
+class DOMWindowIndexedDatabase FINAL : public NoBaseWillBeGarbageCollectedFinalized<DOMWindowIndexedDatabase>, public WillBeHeapSupplement<DOMWindow>, public DOMWindowProperty {

[haraken, 2014/03/27 00:59:03]

Ditto.

[sof, 2014/03/27 07:25:51]

Same re: DOMWindowProperty.

+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMWindowIndexedDatabase);
 public:
     virtual ~DOMWindowIndexedDatabase();
     static DOMWindowIndexedDatabase& from(DOMWindow&);
 
     static IDBFactory* indexedDB(DOMWindow&);
 
     virtual void willDestroyGlobalObjectInFrame() OVERRIDE;
     virtual void willDetachGlobalObjectFromFrame() OVERRIDE;
 
+    void trace(Visitor*) { }
+
 private:
     explicit DOMWindowIndexedDatabase(DOMWindow&);
 
     IDBFactory* indexedDB();
     static const char* supplementName();
 
     DOMWindow& m_window;
     RefPtr<IDBFactory> m_idbFactory;
 };
 
 } // namespace WebCore
 
 #endif // DOMWindowIndexedDatabase_h