ServiceWorker: Implement 'source' and 'origin' attributes of ExtendableMessageEvent

third_party/WebKit/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 53 matching lines @@
     String state() const;
     DEFINE_ATTRIBUTE_EVENT_LISTENER(statechange);
 
     // WebServiceWorkerProxy overrides.
     void dispatchStateChangeEvent() override;
 
     // AbstractWorker overrides.
     const AtomicString& interfaceName() const override;
 
     void internalsTerminate();
+
 private:
     static ServiceWorker* getOrCreate(ExecutionContext*, PassOwnPtr<WebServiceWorker::Handle>);
     ServiceWorker(ExecutionContext*, PassOwnPtr<WebServiceWorker::Handle>);
 
     // Inherit from ContextLifecycleObserver.
     bool hasPendingActivity() const override;
+    void contextDestroyed() override;
 
     // A handle to the service worker representation in the embedder.
     OwnPtr<WebServiceWorker::Handle> m_handle;
+
+    WebServiceWorkerProvider* m_provider;
 };
 
 } // namespace blink
 
 #endif // ServiceWorker_h