Dispatch the ServiceWorker "activate" event during activation

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 "wtf/Forward.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class ExecutionContext;
 class ScriptValue;
 
 // Created for each InstallPhaseEvent instance.
 class WaitUntilObserver FINAL :
     public ContextLifecycleObserver,
     public RefCounted<WaitUntilObserver> {
 public:
-    static PassRefPtr<WaitUntilObserver> create(ExecutionContext*, int eventID);
+    enum EventType {
+        Activate,
+        Install
+    };
+
+    static PassRefPtr<WaitUntilObserver> create(ExecutionContext*, EventType, int eventID);
 
     ~WaitUntilObserver();
 
     // Must be called before and after dispatching the event.
     void willDispatchEvent();
     void didDispatchEvent();
 
-    // Observes the promise and delays calling didHandleInstallEvent() until
+    // Observes the promise and delays calling the continuation until
     // the given promise is resolved or rejected.
     void waitUntil(const ScriptValue&);
 
 private:
     class ThenFunction;
 
-    WaitUntilObserver(ExecutionContext*, int eventID);
+    WaitUntilObserver(ExecutionContext*, EventType, int eventID);
 
     void reportError(const ScriptValue&);
 
     void incrementPendingActivity();
     void decrementPendingActivity();
 
+    EventType m_type;
     int m_eventID;
     int m_pendingActivity;
     bool m_hasError;
 };
 
 } // namespace WebCore
 
 #endif // WaitUntilObserver_h