Tests for WaitUntilObserver and focus/openining windows.

Source/modules/serviceworkers/WaitUntilObserver.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WaitUntilObserver_h
 #define WaitUntilObserver_h
 
 #include "core/dom/ContextLifecycleObserver.h"
 #include "modules/serviceworkers/ServiceWorkerGlobalScopeClient.h"
 #include "platform/Timer.h"
@@ skipping 24 matching lines @@
     void willDispatchEvent();
     void didDispatchEvent(bool errorOccurred);
 
     // Observes the promise and delays calling the continuation until
     // the given promise is resolved or rejected.
     void waitUntil(ScriptState*, const ScriptValue&, ExceptionState&);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
+    friend class InternalsServiceWorker;
     class ThenFunction;
 
     WaitUntilObserver(ExecutionContext*, EventType, int eventID);
 
     void reportError(const ScriptValue&);
 
     void incrementPendingActivity();
     void decrementPendingActivity();
 
     void consumeWindowInteraction(Timer<WaitUntilObserver>*);
 
     EventType m_type;
     int m_eventID;
     int m_pendingActivity;
     bool m_hasError;
     bool m_eventDispatched;
     Timer<WaitUntilObserver> m_consumeWindowInteractionTimer;
 };
 
 } // namespace blink
 
 #endif // WaitUntilObserver_h