ScreenObserver is renamed to BaseScreenDelegate.

chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.h

 // Copyright 2014 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_SUPERVISED_SUPERVISED_USER_CREATION_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_SUPERVISED_USER_CREATION_SCREEN_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 18 matching lines @@
 // Class that controls screen showing ui for supervised user creation.
 class SupervisedUserCreationScreen
     : public BaseScreen,
       public SupervisedUserCreationScreenHandler::Delegate,
       public SupervisedUserCreationController::StatusConsumer,
       public SupervisedUserSyncServiceObserver,
       public ImageDecoder::Delegate,
       public NetworkPortalDetector::Observer,
       public CameraPresenceNotifier::Observer {
  public:
-  SupervisedUserCreationScreen(
-      ScreenObserver* observer,
-      SupervisedUserCreationScreenHandler* actor);
+  SupervisedUserCreationScreen(BaseScreenDelegate* base_screen_delegate,
+                               SupervisedUserCreationScreenHandler* actor);
   virtual ~SupervisedUserCreationScreen();
 
   static SupervisedUserCreationScreen* Get(ScreenManager* manager);
 
   // Makes screen to show message about inconsistency in manager login flow
   // (e.g. password change detected, invalid OAuth token, etc).
   // Called when manager user is successfully authenticated, so ui elements
   // should result in forced logout.
   void ShowManagerInconsistentStateErrorScreen();
 
@@ skipping 97 matching lines @@
 
   base::WeakPtrFactory<SupervisedUserCreationScreen> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserCreationScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_SUPERVISED_USER_CREATION_SCREEN_H_