chromeos: Replace user image notifications with observer

chrome/browser/ui/webui/settings/profile_info_handler.h

 // Copyright 2016 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_UI_WEBUI_SETTINGS_PROFILE_INFO_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_SETTINGS_PROFILE_INFO_HANDLER_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "build/build_config.h"
 #include "chrome/browser/profiles/profile_attributes_storage.h"
 #include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"
 #include "components/prefs/pref_change_registrar.h"
 
 #if defined(OS_CHROMEOS)
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
+#include "components/user_manager/user_manager.h"
 #endif
 
 class Profile;
 
 namespace settings {
 
 class ProfileInfoHandler : public SettingsPageUIHandler,
 #if defined(OS_CHROMEOS)
-                           public content::NotificationObserver,
+                           public user_manager::UserManager::Observer,
 #endif
                            public ProfileAttributesStorage::Observer {
  public:
   static const char kProfileInfoChangedEventName[];
   static const char kProfileManagesSupervisedUsersChangedEventName[];
 
   explicit ProfileInfoHandler(Profile* profile);
   ~ProfileInfoHandler() override;
 
   // SettingsPageUIHandler implementation.
   void RegisterMessages() override;
   void OnJavascriptAllowed() override;
   void OnJavascriptDisallowed() override;
 
 #if defined(OS_CHROMEOS)
-  // content::NotificationObserver implementation.
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
+  // user_manager::UserManager::Observer implementation.
+  void OnUserImageChanged(const user_manager::User& user) override;
 #endif
 
   // ProfileAttributesStorage::Observer implementation.
   void OnProfileNameChanged(const base::FilePath& profile_path,
                             const base::string16& old_profile_name) override;
   void OnProfileAvatarChanged(const base::FilePath& profile_path) override;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ProfileInfoHandlerTest, GetProfileInfo);
   FRIEND_TEST_ALL_PREFIXES(ProfileInfoHandlerTest, PushProfileInfo);
@@ skipping 18 matching lines @@
 
   // Weak pointer.
   Profile* profile_;
 
   ScopedObserver<ProfileAttributesStorage, ProfileInfoHandler>
       profile_observer_;
 
   // Used to listen for changes in the list of managed supervised users.
   PrefChangeRegistrar profile_pref_registrar_;
 
-#if defined(OS_CHROMEOS)
-  // Used to listen to ChromeOS user image changes.
-  content::NotificationRegistrar registrar_;
-#endif
-
   DISALLOW_COPY_AND_ASSIGN(ProfileInfoHandler);
 };
 
 }  // namespace settings
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SETTINGS_PROFILE_INFO_HANDLER_H_