Change extension unload notification to indicate updates....

chrome/browser/background_application_list_model.h

 // Copyright (c) 2010 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 CHROME_BROWSER_BACKGROUND_APPLICATION_LIST_MODEL_H_
 #define CHROME_BROWSER_BACKGROUND_APPLICATION_LIST_MODEL_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 101 matching lines @@
   // application, e. g. the Icon, has changed.
   void OnApplicationDataChanged(const Extension* extension);
 
   // Notifies observers that at least one background application has been added
   // or removed.
   void OnApplicationListChanged();
 
   // Invoked by Observe for EXTENSION_LOADED notifications.
   void OnExtensionLoaded(Extension* extension);
 
-  // Invoked by Observe for EXTENSION_UNLOADED* notifications.
-  void OnExtensionUnloaded(Extension* extension);
+  // Invoked by Observe for EXTENSION_UNLOADED notifications.
+  void OnExtensionUnloaded(const Extension* extension);
 
   // Refresh the list of background applications and generates ApplicationAdded
   // and ApplicationRemoved events.
   void Update();
 
   ApplicationMap applications_;
   ExtensionList extensions_;
   ObserverList<Observer> observers_;
   Profile* profile_;
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundApplicationListModel);
 };
 
 #endif  // CHROME_BROWSER_BACKGROUND_APPLICATION_LIST_MODEL_H_