Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/notifications/desktop_notification_service.cc

 // Copyright (c) 2012 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/notifications/desktop_notification_service.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 678 matching lines @@
   }
 }
 
 void DesktopNotificationService::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
 #if defined(ENABLE_EXTENSIONS)
   DCHECK_EQ(chrome::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED, type);
 
-  extensions::Extension* extension =
-      content::Details<extensions::Extension>(details).ptr();
-  NotifierId notifier_id(NotifierId::APPLICATION, extension->id());
+  extensions::UninstalledExtensionInfo* info =
+      content::Details<extensions::UninstalledExtensionInfo>(details).ptr();
+  NotifierId notifier_id(NotifierId::APPLICATION, info->extension->id());
   if (IsNotifierEnabled(notifier_id))
     return;
 
   // The settings for ephemeral apps will be persisted across cache evictions.
-  if (extensions::util::IsEphemeralApp(extension->id(), profile_))
+  if (extensions::util::IsEphemeralApp(info->extension->id(), profile_))
     return;
 
   SetNotifierEnabled(notifier_id, true);
 #endif
 }
 
 void DesktopNotificationService::FirePermissionLevelChangedEvent(
     const NotifierId& notifier_id, bool enabled) {
 #if defined(ENABLE_EXTENSIONS)
   DCHECK_EQ(NotifierId::APPLICATION, notifier_id.type);
@@ skipping 12 matching lines @@
   // Tell the IO thread that this extension's permission for notifications
   // has changed.
   extensions::InfoMap* extension_info_map =
       extensions::ExtensionSystem::Get(profile_)->info_map();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&extensions::InfoMap::SetNotificationsDisabled,
                  extension_info_map, notifier_id.id, !enabled));
 #endif
 }