fix: restore original GTK/appindicator implementation of tray icons (#23674)

shell/browser/ui/gtk/menu_util.h

@@ -0,0 +1,63 @@
+// Copyright 2013 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 SHELL_BROWSER_UI_GTK_MENU_UTIL_H_
+#define SHELL_BROWSER_UI_GTK_MENU_UTIL_H_
+
+#include <gtk/gtk.h>
+
+#include <string>
+
+#include "ui/gfx/image/image.h"
+
+namespace ui {
+class MenuModel;
+}
+
+namespace electron {
+
+namespace gtkui {
+
+// Builds GtkImageMenuItems.
+GtkWidget* BuildMenuItemWithImage(const std::string& label, GtkWidget* image);
+GtkWidget* BuildMenuItemWithImage(const std::string& label,
+                                  const gfx::Image& icon);
+GtkWidget* BuildMenuItemWithLabel(const std::string& label);
+
+ui::MenuModel* ModelForMenuItem(GtkMenuItem* menu_item);
+
+// This method is used to build the menu dynamically. The return value is the
+// new menu item.
+GtkWidget* AppendMenuItemToMenu(int index,
+                                ui::MenuModel* model,
+                                GtkWidget* menu_item,
+                                GtkWidget* menu,
+                                bool connect_to_activate,
+                                GCallback item_activated_cb,
+                                void* this_ptr);
+
+// Gets the ID of a menu item.
+// Returns true if the menu item has an ID.
+bool GetMenuItemID(GtkWidget* menu_item, int* menu_id);
+
+// Execute command associated with specified id.
+void ExecuteCommand(ui::MenuModel* model, int id);
+
+// Creates a GtkMenu from |model_|. block_activation_ptr is used to disable
+// the item_activated_callback while we set up the set up the menu items.
+// See comments in definition of SetMenuItemInfo for more info.
+void BuildSubmenuFromModel(ui::MenuModel* model,
+                           GtkWidget* menu,
+                           GCallback item_activated_cb,
+                           bool* block_activation,
+                           void* this_ptr);
+
+// Sets the check mark, enabled/disabled state and dynamic labels on menu items.
+void SetMenuItemInfo(GtkWidget* widget, void* block_activation_ptr);
+
+}  // namespace gtkui
+
+}  // namespace electron
+
+#endif  // SHELL_BROWSER_UI_GTK_MENU_UTIL_H_