cros: Disable system tray help/lock buttons during supervised user creation

ash/system/tray/tray_popup_utils.h

 // Copyright 2016 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_TRAY_TRAY_POPUP_UTILS_H_
 #define ASH_SYSTEM_TRAY_TRAY_POPUP_UTILS_H_
 
 #include <memory>
 
 #include "ash/login_status.h"
@@ skipping 182 matching lines @@
   // the left by the width normally occupied by an icon. Caller assumes
   // ownership of the returned separator.
   static views::Separator* CreateListItemSeparator(bool left_inset);
 
   // Creates and returns a horizontal separator line to be drawn between rows
   // in a detailed view above the sub-header rows. Caller assumes ownership of
   // the returned separator.
   static views::Separator* CreateListSubHeaderSeparator();
 
   // Returns true if it is possible to open WebUI settings in a browser window,
-  // i.e., the user is logged in, not on the lock screen, and not in a secondary
-  // account flow.
-  static bool CanOpenWebUISettings(LoginStatus status);
+  // i.e. the user is logged in, not on the lock screen, not adding a secondary
+  // user, and not in the supervised user creation flow.
+  static bool CanOpenWebUISettings();
 
   // Initializes a row in the system menu as checkable and update the check mark
   // status of this row.
   static void InitializeAsCheckableRow(HoverHighlightView* container,
                                        bool checked);
 
   // Updates the visibility and a11y state of the checkable row |container|.
   static void UpdateCheckMarkVisibility(HoverHighlightView* container,
                                         bool visible);
 
  private:
   // Returns the effective ink drop insets for |host| according to the
   // |ink_drop_style|.
   static gfx::Insets GetInkDropInsets(TrayPopupInkDropStyle ink_drop_style);
 
   // Returns the effective ink drop bounds for |host| according to the
   // |ink_drop_style|.
   static gfx::Rect GetInkDropBounds(TrayPopupInkDropStyle ink_drop_style,
                                     const views::View* host);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(TrayPopupUtils);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_POPUP_UTILS_H_