Add SessionStateObserver with ActiveUserChanged()

chrome/browser/ui/ash/chrome_shell_delegate_views.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 "base/command_line.h"
 #include "ash/magnifier/magnifier_constants.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/ash/caps_lock_delegate_views.h"
+#include "chrome/browser/ui/ash/session_state_delegate_views.h"
 #include "chrome/browser/ui/ash/window_positioner.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/startup/startup_browser_creator_impl.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/notification_service.h"
 
@@ skipping 46 matching lines @@
 }
 
 ash::MagnifierType ChromeShellDelegate::GetMagnifierType() const {
   return ash::kDefaultMagnifierType;
 }
 
 ash::CapsLockDelegate* ChromeShellDelegate::CreateCapsLockDelegate() {
   return new CapsLockDelegate();
 }
 
+ash::SessionStateDelegate* ChromeShellDelegate::CreateSessionStateDelegate() {
+  return new SessionStateDelegate;
+}
+
 void ChromeShellDelegate::SaveScreenMagnifierScale(double scale) {
 }
 
 double ChromeShellDelegate::GetSavedScreenMagnifierScale() {
   return std::numeric_limits<double>::min();
 }
 
 bool ChromeShellDelegate::ShouldAlwaysShowAccessibilityMenu() const {
   return false;
 }
@@ skipping 64 matching lines @@
 void ChromeShellDelegate::PlatformInit() {
 #if defined(OS_WIN)
   registrar_.Add(this,
                  chrome::NOTIFICATION_ASH_SESSION_STARTED,
                  content::NotificationService::AllSources());
   registrar_.Add(this,
                  chrome::NOTIFICATION_ASH_SESSION_ENDED,
                  content::NotificationService::AllSources());
 #endif
 }