[gnome-shell] screenshot-ui: Make screenshots appear in recent items

[Marge Bot <marge-bot src gnome org>]

commit 4442ced76032e09cea2fa14c7dfa6e056fa8e3d0
Author: Ivan Molodetskikh <yalterz gmail com>
Date:   Mon Oct 11 10:17:08 2021 +0300

    screenshot-ui: Make screenshots appear in recent items
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1954>

 js/ui/screenshot.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/js/ui/screenshot.js b/js/ui/screenshot.js
index 41a4dfe16e..c6b4c1387f 100644
--- a/js/ui/screenshot.js
+++ b/js/ui/screenshot.js
@@ -1,7 +1,7 @@
 // -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
 /* exported ScreenshotService, ScreenshotUI, showScreenshotUI */
 
-const { Clutter, Gio, GObject, GLib, Meta, Shell, St } = imports.gi;
+const { Clutter, Gio, GObject, GLib, Gtk, Meta, Shell, St } = imports.gi;
 
 const GrabHelper = imports.ui.grabHelper;
 const Layout = imports.ui.layout;
@@ -1586,6 +1586,9 @@ class ScreenshotUI extends St.Widget {
             }
         }
 
+        // Add it to recent files.
+        Gtk.RecentManager.get_default().add_item(file.get_uri());
+
         // Show a notification.
         const source = new MessageTray.Source(
             // Translators: notification source name.