mash: Run pre-unlock animation via SessionController

ash/shell.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_SHELL_H_
 #define ASH_SHELL_H_
 
 #include <memory>
 #include <utility>
 #include <vector>
@@ skipping 254 matching lines @@
   views::NonClientFrameView* CreateDefaultNonClientFrameView(
       views::Widget* widget);
 
   // Sets work area insets of the display containing |window|, pings observers.
   void SetDisplayWorkAreaInsets(aura::Window* window,
                                 const gfx::Insets& insets);
 
   // Called when the application is exiting.
   void OnAppTerminating();
 
-  // Called when the screen is locked (after the lock window is visible) or
-  // unlocked.
-  void OnLockStateChanged(bool locked);
-
   // Called when a casting session is started or stopped.
   void OnCastingSessionStartedOrStopped(bool started);
 
   // Called when a root window is created.
   void OnRootWindowAdded(WmWindow* root_window);
 
   // Creates a virtual keyboard. Deletes the old virtual keyboard if it already
   // exists.
   void CreateKeyboard();
 
@@ skipping 342 matching lines @@
   ui::EventTargeter* GetEventTargeter() override;
 
   // aura::client::ActivationChangeObserver:
   void OnWindowActivated(ActivationReason reason,
                          aura::Window* gained_active,
                          aura::Window* lost_active) override;
 
   // SessionStateObserver:
   void SessionStateChanged(session_manager::SessionState state) override;
   void LoginStatusChanged(LoginStatus login_status) override;
+  void OnLockStateChanged(bool locked) override;
 
   // Callback for prefs::ConnectToPrefService.
   void OnPrefServiceInitialized(std::unique_ptr<::PrefService> pref_service);
 
   static Shell* instance_;
 
   // Only valid in mash, for classic ash this is null.
   static aura::WindowTreeClient* window_tree_client_;
   static aura::WindowManagerClient* window_manager_client_;
 
@@ skipping 159 matching lines @@
   base::ObserverList<ShellObserver> shell_observers_;
 
   scoped_refptr<base::SequencedWorkerPool> blocking_pool_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_