Revert 194578 "Add ash SessionStateDelegate"

trunk/src/ash/shell_delegate.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_DELEGATE_H_
 #define ASH_SHELL_DELEGATE_H_
 
 #include <string>
 
 #include "ash/ash_export.h"
@@ skipping 27 matching lines @@
 class KeyboardControllerProxy;
 }
 
 namespace ash {
 
 class CapsLockDelegate;
 class LauncherDelegate;
 class LauncherModel;
 struct LauncherItem;
 class RootWindowHostFactory;
-class SessionStateDelegate;
 class SystemTrayDelegate;
 class UserWallpaperDelegate;
 
 enum UserMetricsAction {
   UMA_ACCEL_KEYBOARD_BRIGHTNESS_DOWN_F6,
   UMA_ACCEL_KEYBOARD_BRIGHTNESS_UP_F7,
   UMA_ACCEL_LOCK_SCREEN_L,
   UMA_ACCEL_LOCK_SCREEN_LOCK_BUTTON,
   UMA_ACCEL_LOCK_SCREEN_POWER_BUTTON,
   UMA_ACCEL_MAXIMIZE_RESTORE_F4,
@@ skipping 33 matching lines @@
   A11Y_NOTIFICATION_NONE,
   A11Y_NOTIFICATION_SHOW,
 };
 
 // Delegate of the Shell.
 class ASH_EXPORT ShellDelegate {
  public:
   // The Shell owns the delegate.
   virtual ~ShellDelegate() {}
 
+  // Returns true if user has logged in.
+  virtual bool IsUserLoggedIn() const = 0;
+
+  // Returns true if we're logged in and browser has been started
+  virtual bool IsSessionStarted() const = 0;
+
+  // Returns true if we're logged in as guest.
+  virtual bool IsGuestSession() const = 0;
+
   // Returns true if this is the first time that the shell has been run after
   // the system has booted.  false is returned after the shell has been
   // restarted, typically due to logging in as a guest or logging out.
   virtual bool IsFirstRunAfterBoot() const = 0;
 
   // Returns true if multi-profiles feature is enabled.
   virtual bool IsMultiProfilesEnabled() const = 0;
 
   // Returns true if we're running in forced app mode.
   virtual bool IsRunningInForcedAppMode() const = 0;
 
+  // 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).
+  virtual bool CanLockScreen() const = 0;
+
+  // Invoked when a user locks the screen.
+  virtual void LockScreen() = 0;
+
+  // Unlock the screen. Currently used only for tests.
+  virtual void UnlockScreen() = 0;
+
+  // Returns true if the screen is currently locked.
+  virtual bool IsScreenLocked() const = 0;
+
   // Called before processing |Shell::Init()| so that the delegate
   // can perform tasks necessary before the shell is initialized.
   virtual void PreInit() = 0;
 
   // Shuts down the environment.
   virtual void Shutdown() = 0;
 
   // Invoked when the user uses Ctrl-Shift-Q to close chrome.
   virtual void Exit() = 0;
 
@@ skipping 75 matching lines @@
 
   // Creates a system-tray delegate. Shell takes ownership of the delegate.
   virtual SystemTrayDelegate* CreateSystemTrayDelegate() = 0;
 
   // Creates a user wallpaper delegate. Shell takes ownership of the delegate.
   virtual UserWallpaperDelegate* CreateUserWallpaperDelegate() = 0;
 
   // Creates a caps lock delegate. Shell takes ownership of the delegate.
   virtual CapsLockDelegate* CreateCapsLockDelegate() = 0;
 
-  // Creates a session state delegate. Shell takes ownership of the delegate.
-  virtual SessionStateDelegate* CreateSessionStateDelegate() = 0;
-
   // Creates a user action client. Shell takes ownership of the object.
   virtual aura::client::UserActionClient* CreateUserActionClient() = 0;
 
   // Opens the feedback page for "Report Issue".
   virtual void OpenFeedbackPage() = 0;
 
   // Records that the user performed an action.
   virtual void RecordUserMetricsAction(UserMetricsAction action) = 0;
 
   // Handles the Next Track Media shortcut key.
@@ skipping 27 matching lines @@
   // value.
   virtual RootWindowHostFactory* CreateRootWindowHostFactory() = 0;
 
   // Get the product name.
   virtual base::string16 GetProductName() const = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_DELEGATE_H_