Add lock pod animation on unlock.

ash/wm/session_state_controller_impl2.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 ASH_WM_SESSION_STATE_CONTROLLER_IMPL2_H_
 #define ASH_WM_SESSION_STATE_CONTROLLER_IMPL2_H_
 
 #include "ash/ash_export.h"
 #include "ash/shell_observer.h"
 #include "ash/wm/session_state_animator.h"
@@ skipping 122 matching lines @@
 
   // Cancels shutting down and reverts shutdown animation.
   virtual void CancelShutdownAnimation() OVERRIDE;
 
   // Called when Chrome gets a request to display the lock screen.
   virtual void OnStartingLock() OVERRIDE;
 
   // Displays the shutdown animation and requests shutdown when it's done.
   virtual void RequestShutdown() OVERRIDE;
 
+  virtual void OnLockScreenHide(base::Callback<void(void)>& callback) OVERRIDE;
+
  protected:
   friend class test::PowerButtonControllerTest;
 
   bool IsLoggedInAsNonGuest() const;
 
  private:
   void RequestShutdownImpl();
 
   // Starts lock timer.
   void StartLockTimer();
@@ skipping 57 matching lines @@
   // request shutdown.  Gives the animation time to complete before Chrome, X,
   // etc. are shut down.
   base::OneShotTimer<SessionStateControllerImpl2> real_shutdown_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionStateControllerImpl2);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_SESSION_STATE_CONTROLLER_IMPL2_H_