Make ServiceWorker an ActiveDOMObject

Source/modules/serviceworkers/ServiceWorker.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 59 matching lines @@
     // WebServiceWorkerProxy overrides.
     virtual bool isReady() OVERRIDE;
     virtual void dispatchStateChangeEvent() OVERRIDE;
 
     // AbstractWorker overrides.
     virtual const AtomicString& interfaceName() const OVERRIDE;
 
 private:
     class ThenFunction;
 
+    enum ProxyState {
+        Initial,
+        RegisterPromisePending,
+        Ready,
+        ContextStopped
+    };
+
     static PassRefPtr<ServiceWorker> create(ExecutionContext*, PassOwnPtr<blink::WebServiceWorker>);
     ServiceWorker(ExecutionContext*, PassOwnPtr<blink::WebServiceWorker>);
+    void setProxyState(ProxyState);
     void onPromiseResolved();
     void waitOnPromise(ScriptPromise);
 
+    // ActiveDOMObject overrides.
+    virtual bool hasPendingActivity() const OVERRIDE;
+    virtual void stop() OVERRIDE;
+
     OwnPtr<blink::WebServiceWorker> m_outerWorker;
-    bool m_isPromisePending;
+    ProxyState m_proxyState;
 };
 
 } // namespace WebCore
 
 #endif // ServiceWorker_h