Add SessionStateObserver with ActiveUserChanged()

chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc

 // 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.
 
 #include "chrome/browser/ui/ash/chrome_shell_delegate.h"
 
 #include "ash/keyboard_overlay/keyboard_overlay_view.h"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
 #include "chrome/browser/chromeos/background/ash_user_wallpaper_delegate.h"
 #include "chrome/browser/chromeos/display/display_preferences.h"
 #include "chrome/browser/chromeos/extensions/file_manager/file_manager_util.h"
 #include "chrome/browser/chromeos/extensions/media_player_api.h"
 #include "chrome/browser/chromeos/extensions/media_player_event_router.h"
 #include "chrome/browser/chromeos/login/login_display_host_impl.h"
 #include "chrome/browser/chromeos/login/screen_locker.h"
 #include "chrome/browser/chromeos/system/ash_system_tray_delegate.h"
 #include "chrome/browser/extensions/api/terminal/terminal_extension_helper.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/shell_window_registry.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/speech/tts_controller.h"
 #include "chrome/browser/ui/ash/caps_lock_delegate_chromeos.h"
+#include "chrome/browser/ui/ash/session_state_delegate_chromeos.h"
 #include "chrome/browser/ui/ash/window_positioner.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/extensions/application_launch.h"
 #include "chrome/browser/ui/extensions/native_app_window.h"
 #include "chrome/browser/ui/extensions/shell_window.h"
 #include "chrome/browser/ui/webui/chrome_web_contents_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 142 matching lines @@
   }
   return std::numeric_limits<double>::min();
 }
 
 ash::CapsLockDelegate* ChromeShellDelegate::CreateCapsLockDelegate() {
   chromeos::input_method::XKeyboard* xkeyboard =
       chromeos::input_method::InputMethodManager::Get()->GetXKeyboard();
   return new CapsLockDelegate(xkeyboard);
 }
 
+ash::SessionStateDelegate* ChromeShellDelegate::CreateSessionStateDelegate() {
+  return new SessionStateDelegateChromeos;
+}
+
 void ChromeShellDelegate::ShowKeyboardOverlay() {
   // TODO(mazda): Move the show logic to ash (http://crbug.com/124222).
   Profile* profile = ProfileManager::GetDefaultProfileOrOffTheRecord();
   std::string url(chrome::kChromeUIKeyboardOverlayURL);
   ash::KeyboardOverlayView::ShowDialog(profile,
                                        new ChromeWebContentsHandler,
                                        GURL(url));
 }
 
 bool ChromeShellDelegate::ShouldAlwaysShowAccessibilityMenu() const {
@@ skipping 52 matching lines @@
 }
 
 void ChromeShellDelegate::PlatformInit() {
   registrar_.Add(this,
                  chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
                  content::NotificationService::AllSources());
   registrar_.Add(this,
                  chrome::NOTIFICATION_SESSION_STARTED,
                  content::NotificationService::AllSources());
 }