Added quick lock mechanism while in Touchview

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 "ash/ash_export.h"
 #include "ash/shell_observer.h"
 #include "ash/wm/lock_state_observer.h"
@@ skipping 143 matching lines @@
   // 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.
-  // Unlike StartLockAnimation it does no lead to StartShutdownAnimation.
-  void StartLockAnimationAndLockImmediately();
+  // After locking and |kLockToShutdownTimeoutMs| StartShutdownAnimation()
+  // will be called unless CancelShutdownAnimation() is called, if
+  // |shutdown_after_lock| is true.
+  void StartLockAnimationAndLockImmediately(bool shutdown_after_lock);
 
   // Returns true if we have requested system to lock, but haven't received
   // confirmation yet.
   bool LockRequested();
 
   // Returns true if we are shutting down.
   bool ShutdownRequested();
 
   // Returns true if we are within cancellable lock timeframe.
   bool CanCancelLockAnimation();
@@ skipping 145 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_