Add LoginState class to src/chromeos/login

chrome/browser/chromeos/power/power_button_observer.cc

Index: chrome/browser/chromeos/power/power_button_observer.cc
diff --git a/chrome/browser/chromeos/power/power_button_observer.cc b/chrome/browser/chromeos/power/power_button_observer.cc
index 793f00ea88acb3ac96b2214f00a6bf1230dd36b3..87bfff377244e04ad0faf726128a5368b070ee93 100644
--- a/chrome/browser/chromeos/power/power_button_observer.cc
+++ b/chrome/browser/chromeos/power/power_button_observer.cc
@@ -5,12 +5,11 @@
 #include "chrome/browser/chromeos/power/power_button_observer.h"
 
 #include "ash/shell.h"
+#include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/user/login_status.h"
 #include "ash/wm/power_button_controller.h"
 #include "base/logging.h"
 #include "chrome/browser/chromeos/login/screen_locker.h"
-#include "chrome/browser/chromeos/login/user.h"
-#include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
@@ -21,29 +20,10 @@ namespace chromeos {
 namespace {
 
 ash::user::LoginStatus GetCurrentLoginStatus() {
-  const UserManager* user_manager = UserManager::Get();
-  if (!user_manager->IsUserLoggedIn())
+  if (!ash::Shell::GetInstance()->system_tray_delegate())
     return ash::user::LOGGED_IN_NONE;
-  if (user_manager->IsCurrentUserOwner())
-    return ash::user::LOGGED_IN_OWNER;
-
-  switch (user_manager->GetLoggedInUser()->GetType()) {
-    case User::USER_TYPE_REGULAR:
-      return ash::user::LOGGED_IN_USER;
-    case User::USER_TYPE_GUEST:
-      return ash::user::LOGGED_IN_GUEST;
-    case User::USER_TYPE_RETAIL_MODE:
-      return ash::user::LOGGED_IN_RETAIL_MODE;
-    case User::USER_TYPE_PUBLIC_ACCOUNT:
-      return ash::user::LOGGED_IN_PUBLIC;
-    case User::USER_TYPE_LOCALLY_MANAGED:
-      return ash::user::LOGGED_IN_LOCALLY_MANAGED;
-    case User::USER_TYPE_KIOSK_APP:
-      return ash::user::LOGGED_IN_KIOSK_APP;
-  }
-
-  NOTREACHED();
-  return ash::user::LOGGED_IN_USER;
+  return ash::Shell::GetInstance()->system_tray_delegate()->
+      GetUserLoginStatus();
 }
 
 }  // namespace