Additional cleanup of pre-md system menu user row code.

ash/common/system/user/user_view.h

 // Copyright 2014 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_COMMON_SYSTEM_USER_USER_VIEW_H_
 #define ASH_COMMON_SYSTEM_USER_USER_VIEW_H_
 
 #include <memory>
 
 #include "ash/common/system/tray/tray_constants.h"
 #include "ash/common/system/user/tray_user.h"
 #include "ash/public/cpp/session_types.h"
 #include "base/macros.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/focus/focus_manager.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/view.h"
 
 namespace gfx {
 class Rect;
 }
 
 namespace views {
 class FocusManager;
 }
 
 namespace ash {
 
 enum class LoginStatus;
-class PopupMessage;
 class SystemTrayItem;
 
 namespace tray {
 
 // The view of a user item in system tray bubble.
 class UserView : public views::View,
                  public views::ButtonListener,
                  public views::FocusChangeListener {
  public:
   UserView(SystemTrayItem* owner, LoginStatus login, UserIndex index);
@@ skipping 32 matching lines @@
   views::View* user_card_view_;
 
   // This is the owner system tray item of this view.
   SystemTrayItem* owner_;
 
   // True if |user_card_view_| is a |ButtonFromView| - otherwise it is only
   // a |UserCardView|.
   bool is_user_card_button_;
 
   views::View* logout_button_;
-  std::unique_ptr<PopupMessage> popup_message_;
   std::unique_ptr<views::Widget> add_menu_option_;
 
   // False when the add user panel is visible but not activatable.
   bool add_user_enabled_;
 
   // The focus manager which we use to detect focus changes.
   views::FocusManager* focus_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(UserView);
 };
 
 }  // namespace tray
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_USER_USER_VIEW_H_