[extensions-web] switch: use non-vendor-prefixed CSS property

[Yuri Konotopov <ykonotopov src gnome org>]

commit 70c1be362f9813d7fd23e56a2d14156c7c723cf6
Author: Yuri Konotopov <ykonotopov gnome org>
Date:   Mon Jan 7 21:37:18 2019 +0400

    switch: use non-vendor-prefixed CSS property

 sweettooth/static/js/switch.js | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/sweettooth/static/js/switch.js b/sweettooth/static/js/switch.js
index 75d85fe..efcc171 100644
--- a/sweettooth/static/js/switch.js
+++ b/sweettooth/static/js/switch.js
@@ -81,6 +81,7 @@ define(['jquery'], function ($) {
 
                                        // Disable selection.
                                        .css({
+                                               'user-select': 'none',
                                                '-moz-user-select': 'none'
                                        })
                                        .attr('unselectable', 'on')