mash: Migrate some system user files to common.

ash/system/user/login_status.cc

-// 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.
-
-#include "ash/system/user/login_status.h"
-
-#include "ash/common/session/session_state_delegate.h"
-#include "ash/shell.h"
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "grit/ash_strings.h"
-#include "ui/base/resource/resource_bundle.h"
-
-namespace ash {
-namespace user {
-
-base::string16 GetLocalizedSignOutStringForStatus(LoginStatus status,
-                                                  bool multiline) {
-  int message_id;
-  switch (status) {
-    case LoginStatus::GUEST:
-      message_id = IDS_ASH_STATUS_TRAY_EXIT_GUEST;
-      break;
-    case LoginStatus::PUBLIC:
-      message_id = IDS_ASH_STATUS_TRAY_EXIT_PUBLIC;
-      break;
-    default:
-      if (ash::Shell::GetInstance()->session_state_delegate()->
-              NumberOfLoggedInUsers() > 1) {
-        message_id = IDS_ASH_STATUS_TRAY_SIGN_OUT_ALL;
-      } else {
-        message_id = IDS_ASH_STATUS_TRAY_SIGN_OUT;
-      }
-      break;
-  }
-  base::string16 message =
-      ui::ResourceBundle::GetSharedInstance().GetLocalizedString(message_id);
-  // Desirable line breaking points are marked using \n. As the resource
-  // framework does not evaluate escape sequences, the \n need to be explicitly
-  // handled. Depending on the value of |multiline|, actual line breaks or
-  // spaces are substituted.
-  base::string16 newline = multiline ? base::ASCIIToUTF16("\n")
-                                     : base::ASCIIToUTF16(" ");
-  base::ReplaceSubstringsAfterOffset(
-      &message, 0, base::ASCIIToUTF16("\\n"), newline);
-  return message;
-}
-
-}  // namespace user
-}  // namespace ash