Fixed suggesting adding more users into multi-profile session when we don't have more

ash/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_SYSTEM_USER_USER_VIEW_H_
 #define ASH_SYSTEM_USER_USER_VIEW_H_
 
 #include "ash/session/session_state_delegate.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/user/login_status.h"
@@ skipping 73 matching lines @@
   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_;
   scoped_ptr<PopupMessage> popup_message_;
   scoped_ptr<views::Widget> add_menu_option_;
 
-  // True when the add user panel is visible but not activatable.
-  bool add_user_disabled_;
+  // False when the add user panel is visible but not activatable.
+  bool add_user_enabled_;
 
   // True if this view will be used inside detailed view.
   bool for_detailed_view_;
 
   // The mouse watcher which takes care of out of window hover events.
   scoped_ptr<views::MouseWatcher> mouse_watcher_;
 
   // 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_SYSTEM_USER_USER_VIEW_H_