chromeos: Replace user image notifications with observer

chrome/browser/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_BROWSER_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_BROWSER_CHROME_NOTIFICATION_TYPES_H_
 
 #include "build/build_config.h"
 #include "extensions/features/features.h"
 
@@ skipping 329 matching lines @@
   NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
 
   // Sent when the chromium session of a particular user is started.
   // If this is a new user on the machine this will not be sent until a profile
   // picture has been selected, unlike NOTIFICATION_LOGIN_USER_CHANGED which is
   // sent immediately after the user has logged in. This will be sent again if
   // the browser crashes and restarts.
   // The details are a chromeos::User object.
   NOTIFICATION_SESSION_STARTED,
 
-  // Sent when user image is updated.
-  NOTIFICATION_LOGIN_USER_IMAGE_CHANGED,
-
-  // Sent by UserManager when a profile image download has been completed.
-  NOTIFICATION_PROFILE_IMAGE_UPDATED,
-
-  // Sent by UserManager when profile image download has failed or user has the
-  // default profile image or no profile image at all. No details are expected.
-  NOTIFICATION_PROFILE_IMAGE_UPDATE_FAILED,
-
   // Sent when a network error message is displayed on the WebUI login screen.
   // First paint event of this fires NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE.
   NOTIFICATION_LOGIN_NETWORK_ERROR_SHOWN,
 
   // Sent when the specific part of login/lock WebUI is considered to be
   // visible. That moment is tracked as the first paint event after one of the:
   // NOTIFICATION_LOGIN_NETWORK_ERROR_SHOWN
   //
   // Possible series of notifications:
   // 1. Boot into fresh OOBE
@@ skipping 115 matching lines @@
   // Note:-
   // 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_BROWSER_CHROME_NOTIFICATION_TYPES_H_