Add ash SessionStateDelegate

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 <utility>
 #include <vector>
 
@@ skipping 64 matching lines @@
 class Launcher;
 class LauncherDelegate;
 class LauncherModel;
 class MagnificationController;
 class NestedDispatcherController;
 class PartialMagnificationController;
 class PowerButtonController;
 class RootWindowHostFactory;
 class ScreenAsh;
 class SessionStateController;
+class SessionStateDelegate;
 class ShellDelegate;
 class ShellObserver;
 class SystemTray;
 class SystemTrayDelegate;
 class SystemTrayNotifier;
 class UserActivityDetector;
 class UserWallpaperDelegate;
 class VideoDetector;
 class WebNotificationTray;
 class WindowCycleController;
@@ skipping 115 matching lines @@
   // list should be shown. If this is NULL, the active root window
   // will be used.
   void ToggleAppList(aura::Window* anchor);
 
   // Returns app list target visibility.
   bool GetAppListTargetVisibility() const;
 
   // Returns app list window or NULL if it is not visible.
   aura::Window* GetAppListWindow();
 
-  // Returns true if a user is logged in whose session can be locked (i.e. the
-  // user has a password with which to unlock the session).
-  bool CanLockScreen();
-
-  // Returns true if the screen is locked.
-  bool IsScreenLocked() const;
-
   // Returns true if a system-modal dialog window is currently open.
   bool IsSystemModalWindowOpen() const;
 
   // For testing only: set simulation that a modal window is open
   void SimulateModalWindowOpenForTesting(bool modal_window_open) {
     simulate_modal_window_open_for_testing_ = modal_window_open;
   }
 
   // Creates a default views::NonClientFrameView for use by windows in the
   // Ash environment.
@@ skipping 90 matching lines @@
   ShellDelegate* delegate() { return delegate_.get(); }
 
   UserWallpaperDelegate* user_wallpaper_delegate() {
     return user_wallpaper_delegate_.get();
   }
 
   CapsLockDelegate* caps_lock_delegate() {
     return caps_lock_delegate_.get();
   }
 
+  SessionStateDelegate* session_state_delegate() {
+    return session_state_delegate_.get();
+  }
+
   HighContrastController* high_contrast_controller() {
     return high_contrast_controller_.get();
   }
 
   MagnificationController* magnification_controller() {
     return magnification_controller_.get();
   }
 
   PartialMagnificationController* partial_magnification_controller() {
     return partial_magnification_controller_.get();
@@ skipping 149 matching lines @@
   scoped_ptr<NestedDispatcherController> nested_dispatcher_controller_;
 
   scoped_ptr<AcceleratorController> accelerator_controller_;
 #endif  // !defined(OS_MACOSX)
 
   scoped_ptr<ShellDelegate> delegate_;
   scoped_ptr<SystemTrayDelegate> system_tray_delegate_;
   scoped_ptr<SystemTrayNotifier> system_tray_notifier_;
   scoped_ptr<UserWallpaperDelegate> user_wallpaper_delegate_;
   scoped_ptr<CapsLockDelegate> caps_lock_delegate_;
+  scoped_ptr<SessionStateDelegate> session_state_delegate_;
   scoped_ptr<LauncherDelegate> launcher_delegate_;
 
   scoped_ptr<LauncherModel> launcher_model_;
 
   scoped_ptr<internal::AppListController> app_list_controller_;
 
   scoped_ptr<internal::ActivationController> activation_controller_;
   scoped_ptr<internal::CaptureController> capture_controller_;
   scoped_ptr<internal::DragDropController> drag_drop_controller_;
   scoped_ptr<internal::ResizeShadowController> resize_shadow_controller_;
@@ skipping 67 matching lines @@
 
   // For testing only: simulate that a modal window is open
   bool simulate_modal_window_open_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_