chromeos: Replace user image notifications with observer

chrome/browser/chromeos/login/screens/user_image_screen.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_IMAGE_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_IMAGE_SCREEN_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "chrome/browser/chromeos/camera_presence_notifier.h"
 #include "chrome/browser/chromeos/login/screens/base_screen.h"
 #include "chrome/browser/chromeos/login/screens/user_image_model.h"
 #include "chrome/browser/chromeos/login/users/avatar/user_image_sync_observer.h"
 #include "chrome/browser/image_decoder.h"
 #include "components/user_manager/user.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
+#include "components/user_manager/user_manager.h"
 
 namespace base {
 class Timer;
 class Value;
 }
 
 namespace policy {
 class PolicyChangeRegistrar;
 }
 
 namespace chromeos {
 
 class ScreenManager;
 class UserImageManager;
 class UserImageView;
 
 class UserImageScreen : public UserImageModel,
                         public ImageDecoder::ImageRequest,
-                        public content::NotificationObserver,
+                        public user_manager::UserManager::Observer,
                         public UserImageSyncObserver::Observer,
                         public CameraPresenceNotifier::Observer {
  public:
   UserImageScreen(BaseScreenDelegate* base_screen_delegate,
                   UserImageView* view);
   ~UserImageScreen() override;
 
   static UserImageScreen* Get(ScreenManager* manager);
 
   // BaseScreen implementation:
   void Show() override;
   void Hide() override;
 
   // UserImageScreenActor::Delegate implementation:
   void OnScreenReady() override;
   void OnPhotoTaken(const std::string& raw_data) override;
   void OnImageSelected(const std::string& image_url,
                        const std::string& image_type,
                        bool is_user_selection) override;
   void OnImageAccepted() override;
   void OnViewDestroyed(UserImageView* view) override;
 
-  // 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;
+  void OnUserProfileImageUpdateFailed(const user_manager::User& user) override;
+  void OnUserProfileImageUpdated(const user_manager::User& user,
+                                 const gfx::ImageSkia& profile_image) override;
 
   // ImageDecoder::ImageRequest implementation:
   void OnImageDecoded(const SkBitmap& decoded_image) override;
   void OnDecodeImageFailed() override;
 
   // CameraPresenceNotifier::Observer implementation:
   void OnCameraPresenceCheckDone(bool is_camera_present) override;
 
   // UserImageSyncObserver::Observer implementation:
   void OnInitialSync(bool local_image_updated) override;
@@ skipping 32 matching lines @@
 
   // Called when it's decided not to skip the screen.
   void HideCurtain();
 
   // Closes the screen.
   void ExitScreen();
 
   // Reports sync duration and result to UMA.
   void ReportSyncResult(SyncResult timed_out) const;
 
-  content::NotificationRegistrar notification_registrar_;
-
   std::unique_ptr<policy::PolicyChangeRegistrar> policy_registrar_;
 
   UserImageView* view_;
 
   // Last user photo, if taken.
   gfx::ImageSkia user_photo_;
 
   // If |true|, decoded photo should be immediately accepted (i.e., both
   // HandleTakePhoto and HandleImageAccepted have already been called but we're
   // still waiting for  photo image decoding to finish.
@@ skipping 13 matching lines @@
 
   // The time when we started wait for user image sync.
   base::Time sync_waiting_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(UserImageScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_IMAGE_SCREEN_H_