mash: Migrate some system user files to common.

ash/system/user/login_status.h

Index: ash/system/user/login_status.h
diff --git a/ash/system/user/login_status.h b/ash/system/user/login_status.h
deleted file mode 100644
index 672389aa922c84b37ceeeb247326279849d47710..0000000000000000000000000000000000000000
--- a/ash/system/user/login_status.h
+++ /dev/null
@@ -1,20 +0,0 @@
-// 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_SYSTEM_USER_LOGIN_STATUS_H_
-#define ASH_SYSTEM_USER_LOGIN_STATUS_H_
-
-#include "ash/common/login_status.h"
-#include "base/strings/string16.h"
-
-namespace ash {
-namespace user {
-
-base::string16 GetLocalizedSignOutStringForStatus(LoginStatus status,
-                                                  bool multiline);
-
-}  // namespace user
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_USER_LOGIN_STATUS_H_