Change NotifyAppList*() functions into observers on a ProfileKeyedService.

chrome/common/chrome_notification_types.h

 // Copyright 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.
 
 #ifndef CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 
 #include "build/build_config.h"
 #include "content/public/browser/notification_types.h"
 
@@ skipping 1128 matching lines @@
   // Sent when an app is installed and an NTP has been shown. Source is the
   // WebContents that was shown, and Details is the string ID of the extension
   // which was installed.
   NOTIFICATION_APP_INSTALLED_TO_NTP,
 
   // Similar to NOTIFICATION_APP_INSTALLED_TO_NTP but used to nofity ash AppList
   // about installed app. Source is the profile in which the app is installed
   // and Details is the string ID of the extension.
   NOTIFICATION_APP_INSTALLED_TO_APPLIST,
 
+  // Sent when an extension begins installing. The details are an
+  // ExtensionInstallingDetails, and the source is a Profile.
+  NOTIFICATION_EXTENSION_INSTALL_BEGIN,
+
+  // Sent when an extension fails to install. The details are an extension id.
+  NOTIFICATION_EXTENSION_INSTALL_FAIL,
+
+  // Sent when an extension installation makes progress. The details are a
+  // std::pair<std::string, int> - the extension id and the percent complete.
+  NOTIFICATION_EXTENSION_INSTALL_PROGRESS,
+
 #if defined(USE_ASH)
   // Sent when wallpaper show animation has finished.
   NOTIFICATION_WALLPAPER_ANIMATION_FINISHED,
 #endif
 
 #if defined(OS_CHROMEOS)
   // Sent when WebSocketProxy started accepting connections; details is integer
   // port on which proxy is listening.
   NOTIFICATION_WEB_SOCKET_PROXY_STARTED,
 #endif
@@ skipping 94 matching lines @@
   // Currently only Content and Chrome define and use notifications.
   // Custom notifications not belonging to Content and Chrome should start
   // from here.
   NOTIFICATION_CHROME_END,
 };
 
 }  // namespace chrome
 
 
 #endif  // CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_