CameraPresenceNotifier observers removal supported.

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 "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "chrome/browser/chromeos/camera_presence_notifier.h"
 #include "chrome/browser/chromeos/login/screens/user_image_screen_actor.h"
 #include "chrome/browser/chromeos/login/screens/wizard_screen.h"
 #include "chrome/browser/chromeos/login/user.h"
 #include "chrome/browser/chromeos/login/user_image_sync_observer.h"
 #include "chrome/browser/image_decoder.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 namespace base {
 class Timer;
 class Value;
 };
 
 namespace policy {
 class PolicyChangeRegistrar;
 }
 
 namespace chromeos {
 
 class UserImageScreen: public WizardScreen,
                        public UserImageScreenActor::Delegate,
                        public ImageDecoder::Delegate,
                        public content::NotificationObserver,
-                       public UserImageSyncObserver::Observer {
+                       public UserImageSyncObserver::Observer,
+                       public CameraPresenceNotifier::Observer {
  public:
   UserImageScreen(ScreenObserver* screen_observer,
                   UserImageScreenActor* actor);
   virtual ~UserImageScreen();
 
   // Indicates whether profile picture is enabled for given user.
   void SetProfilePictureEnabled(bool support_profile_picture);
   // Sets |user_id| of user that would have picture updated.
   void SetUserID(const std::string& user_id);
 
@@ skipping 18 matching lines @@
 
   // content::NotificationObserver implementation:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // ImageDecoder::Delegate implementation:
   virtual void OnImageDecoded(const ImageDecoder* decoder,
                               const SkBitmap& decoded_image) OVERRIDE;
   virtual void OnDecodeImageFailed(const ImageDecoder* decoder) OVERRIDE;
+
+  // CameraPresenceNotifier::Observer implementation:
   virtual void OnCameraPresenceCheckDone(bool is_camera_present) OVERRIDE;
 
   // UserImageSyncObserver::Observer implementation:
   virtual void OnInitialSync(bool local_image_updated) OVERRIDE;
 
   bool user_selected_image() const { return user_has_selected_image_; }
 
  private:
   // Called when whaiting for sync timed out.
   void OnSyncTimeout();
@@ skipping 60 matching lines @@
 
   // True if user has explicitly selected some image.
   bool user_has_selected_image_;
 
   DISALLOW_COPY_AND_ASSIGN(UserImageScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_IMAGE_SCREEN_H_