Change extension unload notification to indicate updates....

chrome/browser/background_page_tracker.cc

 // 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.
 
 #include "chrome/browser/background_page_tracker.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
@@ skipping 147 matching lines @@
       OnBackgroundPageLoaded(id);
       break;
     }
     case NotificationType::EXTENSION_LOADED: {
       const Extension* extension = Details<const Extension>(details).ptr();
       if (extension->background_url().is_valid())
         OnBackgroundPageLoaded(extension->id());
       break;
     }
     case NotificationType::EXTENSION_UNLOADED: {
-      std::string id = Details<const Extension>(details)->id();
+      std::string id = Details<UnloadedExtensionInfo>(details)->extension->id();
       OnExtensionUnloaded(id);
       break;
     }
     default:
       NOTREACHED();
   }
 }
 
 bool BackgroundPageTracker::UpdateExtensionList() {
   // Extensions are loaded - update our list.
@@ skipping 107 matching lines @@
   prefs->ScheduleSavePersistentPrefs();
   SendChangeNotification();
 }
 
 void BackgroundPageTracker::SendChangeNotification() {
   NotificationService::current()->Notify(
       NotificationType::BACKGROUND_PAGE_TRACKER_CHANGED,
       Source<BackgroundPageTracker>(this),
       NotificationService::NoDetails());
 }