Oilpan: move WorkerGlobalScope to oilpan's heap.

Source/modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h

 /*
  * Copyright (C) 2008, 2009 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 #define WorkerGlobalScopeIndexedDatabase_h
 
 #include "core/workers/WorkerSupplementable.h"
 
 namespace WebCore {
 
 class IDBFactory;
 class IDBFactoryBackendInterface;
 class ExecutionContext;
 
-class WorkerGlobalScopeIndexedDatabase FINAL : public WorkerSupplement {
+class WorkerGlobalScopeIndexedDatabase FINAL : public NoBaseWillBeGarbageCollectedFinalized<WorkerGlobalScopeIndexedDatabase>, public WorkerSupplement {
 public:
     virtual ~WorkerGlobalScopeIndexedDatabase();
     static WorkerGlobalScopeIndexedDatabase& from(WorkerSupplementable&);
 
     static IDBFactory* indexedDB(WorkerSupplementable&);
 
+    virtual void trace(Visitor*);
+
 private:
     WorkerGlobalScopeIndexedDatabase();
 
     IDBFactory* indexedDB();
     static const char* supplementName();
 
     RefPtr<IDBFactoryBackendInterface> m_factoryBackend;
     RefPtr<IDBFactory> m_idbFactory;
 };
 
 } // namespace WebCore
 
 #endif // WorkerGlobalScopeIndexedDatabase_h