ash: Use SessionController instead of SessionStateDelegate

chrome/browser/ui/ash/session_state_delegate_chromeos.h

 // Copyright (c) 2013 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_ASH_SESSION_STATE_DELEGATE_CHROMEOS_H_
 #define CHROME_BROWSER_UI_ASH_SESSION_STATE_DELEGATE_CHROMEOS_H_
 
 #include "ash/common/session/session_state_delegate.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/observer_list.h"
-#include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
-#include "chromeos/login/login_state.h"
-#include "components/user_manager/user_manager.h"
 
-namespace ash {
-class SessionStateObserver;
-}  // namespace ash
-
-class SessionStateDelegateChromeos
-    : public ash::SessionStateDelegate,
-      public chromeos::LoginState::Observer,
-      public user_manager::UserManager::UserSessionStateObserver,
-      public chromeos::UserAddingScreen::Observer {
+class SessionStateDelegateChromeos : public ash::SessionStateDelegate {
  public:
   SessionStateDelegateChromeos();
   ~SessionStateDelegateChromeos() override;
 
   // ash::SessionStateDelegate:
-  int GetMaximumNumberOfLoggedInUsers() const override;
-  int NumberOfLoggedInUsers() const override;
-  ash::AddUserSessionPolicy GetAddUserSessionPolicy() const override;
-  bool IsActiveUserSessionStarted() const override;
-  bool CanLockScreen() const override;
-  bool IsScreenLocked() const override;
-  bool ShouldLockScreenAutomatically() const override;
-  void LockScreen() override;
-  void UnlockScreen() override;
-  bool IsUserSessionBlocked() const override;
-  session_manager::SessionState GetSessionState() const override;
-  const user_manager::UserInfo* GetUserInfo(
-      ash::UserIndex index) const override;
   bool ShouldShowAvatar(ash::WmWindow* window) const override;
   gfx::ImageSkia GetAvatarImageForWindow(ash::WmWindow* window) const override;
-  void SwitchActiveUser(const AccountId& account_id) override;
-  void CycleActiveUser(ash::CycleUserDirection direction) override;
-  bool IsMultiProfileAllowedByPrimaryUserPolicy() const override;
-  void AddSessionStateObserver(ash::SessionStateObserver* observer) override;
-  void RemoveSessionStateObserver(ash::SessionStateObserver* observer) override;
-
-  // chromeos::LoginState::Observer overrides.
-  void LoggedInStateChanged() override;
-
-  // user_manager::UserManager::UserSessionStateObserver:
-  void ActiveUserChanged(const user_manager::User* active_user) override;
-  void UserAddedToSession(const user_manager::User* added_user) override;
-
-  // chromeos::UserAddingScreen::Observer:
-  void OnUserAddingStarted() override;
-  void OnUserAddingFinished() override;
 
  private:
-  // Sets session state to |new_state|.
-  // If |force| is true then |new_state| is set even if existing session
-  // state is the same (used for explicit initialization).
-  void SetSessionState(session_manager::SessionState new_state, bool force);
-
-  // Notify observers about session state change.
-  void NotifySessionStateChanged();
-
-  // Switches to a new user. This call might show a dialog asking the user if
-  // they want to stop desktop casting before switching.
-  void TryToSwitchUser(const AccountId& account_id);
-
-  // List of observers is only used on Chrome OS for now.
-  base::ObserverList<ash::SessionStateObserver> session_state_observer_list_;
-
-  // Session state (e.g. login screen vs. user session).
-  session_manager::SessionState session_state_;
-
   DISALLOW_COPY_AND_ASSIGN(SessionStateDelegateChromeos);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_SESSION_STATE_DELEGATE_CHROMEOS_H_