mash: Migrate ShelfLockingManager to ash/common.

ash/wm/lock_state_controller.h

 // Copyright 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 ASH_WM_LOCK_STATE_CONTROLLER_H_
 #define ASH_WM_LOCK_STATE_CONTROLLER_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
 #include "ash/common/shell_observer.h"
-#include "ash/wm/lock_state_observer.h"
 #include "ash/wm/session_state_animator.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
 #include "base/time/time.h"
 #include "base/timer/elapsed_timer.h"
 #include "base/timer/timer.h"
 #include "ui/aura/window_tree_host_observer.h"
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
@@ skipping 112 matching lines @@
     LockStateController* controller_;  // not owned
 
     DISALLOW_COPY_AND_ASSIGN(TestApi);
   };
 
   LockStateController();
   ~LockStateController() override;
 
   void SetDelegate(std::unique_ptr<LockStateControllerDelegate> delegate);
 
-  void AddObserver(LockStateObserver* observer);
-  void RemoveObserver(LockStateObserver* observer);
-  bool HasObserver(const LockStateObserver* observer) const;
-
   // Starts locking (with slow animation) that can be cancelled.
   // After locking and |kLockToShutdownTimeoutMs| StartShutdownAnimation()
   // will be called unless CancelShutdownAnimation() is called, if
   // |shutdown_after_lock| is true.
   void StartLockAnimation(bool shutdown_after_lock);
 
   // Starts shutting down (with slow animation) that can be cancelled.
   void StartShutdownAnimation();
 
   // Starts usual lock animation, but locks immediately.  After locking and
@@ skipping 112 matching lines @@
 
   // Fades out background layer with |speed| if it was hidden in unlocked state.
   void AnimateBackgroundHidingIfNecessary(
       ash::SessionStateAnimator::AnimationSpeed speed,
       SessionStateAnimator::AnimationSequence* animation_sequence);
 
   std::unique_ptr<SessionStateAnimator> animator_;
 
   std::unique_ptr<LockStateControllerDelegate> delegate_;
 
-  base::ObserverList<LockStateObserver> observers_;
-
   // The current login status, or original login status from before we locked.
   LoginStatus login_status_;
 
   // Current lock status.
   bool system_is_locked_;
 
   // Are we in the process of shutting the machine down?
   bool shutting_down_;
 
   // Indicates whether controller should proceed to (cancellable) shutdown after
@@ skipping 32 matching lines @@
   base::Closure lock_screen_displayed_callback_;
 
   base::WeakPtrFactory<LockStateController> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LockStateController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_LOCK_STATE_CONTROLLER_H_