Reuse the code within UpdateCheckMark()

ash/common/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_COMMON_SYSTEM_TRAY_TRAY_POPUP_UTILS_H_
 #define ASH_COMMON_SYSTEM_TRAY_TRAY_POPUP_UTILS_H_
 
 #include <memory>
 
 #include "ash/common/login_status.h"
@@ skipping 14 matching lines @@
 class Label;
 class LabelButton;
 class Painter;
 class Separator;
 class Slider;
 class SliderListener;
 class ToggleButton;
 }  // namespace views
 
 namespace ash {
+class HoverHighlightView;
 
 // Factory/utility functions used by the system menu.
 class TrayPopupUtils {
  public:
   // Creates a default container view to be used by system menu rows that are
   // either a single targetable area or not targetable at all. The caller takes
   // over ownership of the created view.
   //
   // The returned view consists of 3 regions: START, CENTER, and END. Any child
   // Views added to the START and END containers will be added horizontally and
@@ skipping 151 matching lines @@
   // 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);
 
+  // Initialize a row in the system menu as checkable and update the check mark
+  // status of this row.
+  static void InitializeAsCheckableRow(HoverHighlightView* container,
+                                       bool checked);
+
+  // Update the status of check mark when click a row in the system menu.

[tdanderson, 2017/04/07 20:57:32]

nit: How about something like "Updates the visibility and a11y state of the
checkable row |container|." here?

+  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_COMMON_SYSTEM_TRAY_TRAY_POPUP_UTILS_H_