chromeos: Replace user image notifications with observer

chrome/browser/ui/webui/settings/chromeos/change_picture_handler.h

 // Copyright 2015 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_CHROMEOS_CHANGE_PICTURE_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_SETTINGS_CHROMEOS_CHANGE_PICTURE_HANDLER_H_
 
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/chromeos/camera_presence_notifier.h"
 #include "chrome/browser/image_decoder.h"
 #include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
+#include "components/user_manager/user_manager.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/shell_dialogs/select_file_dialog.h"
 
 namespace base {
 class ListValue;
 }
 
 namespace user_manager {
 class User;
 }
 
 namespace chromeos {
 
 namespace settings {
 
 // ChromeOS user image settings page UI handler.
 class ChangePictureHandler : public ::settings::SettingsPageUIHandler,
                              public ui::SelectFileDialog::Listener,
-                             public content::NotificationObserver,
+                             public user_manager::UserManager::Observer,
                              public ImageDecoder::ImageRequest,
                              public CameraPresenceNotifier::Observer {
  public:
   ChangePictureHandler();
   ~ChangePictureHandler() override;
 
   // WebUIMessageHandler implementation.
   void RegisterMessages() override;
   void OnJavascriptAllowed() override;
   void OnJavascriptDisallowed() override;
@@ skipping 41 matching lines @@
   void HandlePageInitialized(const base::ListValue* args);
 
   // Selects one of the available images as user's.
   void HandleSelectImage(const base::ListValue* args);
 
   // SelectFileDialog::Delegate implementation.
   void FileSelected(const base::FilePath& path,
                     int index,
                     void* params) 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 OnUserProfileImageUpdated(const user_manager::User& user,
+                                 const gfx::ImageSkia& profile_image) override;
 
   // Sets user image to photo taken from camera.
   void SetImageFromCamera(const gfx::ImageSkia& photo);
 
   // Returns handle to browser window or NULL if it can't be found.
   gfx::NativeWindow GetBrowserWindow() const;
 
   // Overriden from ImageDecoder::ImageRequest:
   void OnImageDecoded(const SkBitmap& decoded_image) override;
   void OnDecodeImageFailed() override;
@@ skipping 10 matching lines @@
 
   // Index of the previous user image.
   int previous_image_index_;
 
   // Last user photo, if taken.
   gfx::ImageSkia user_photo_;
 
   // Data URL for |user_photo_|.
   std::string user_photo_data_url_;
 
-  content::NotificationRegistrar registrar_;
-
   ScopedObserver<CameraPresenceNotifier, ChangePictureHandler> camera_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ChangePictureHandler);
 };
 
 }  // namespace settings
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SETTINGS_CHROMEOS_CHANGE_PICTURE_HANDLER_H_