Initial import from https://github.com/Unfocused/bedrock/blob/9df4b81ee4345da55c1a6668908a7c0a3ec74587/media/js/firefox/firstrun/mozilla-uitour.js
Initial import from https://github.com/Unfocused/bedrock/blob/9df4b81ee4345da55c1a6668908a7c0a3ec74587/media/js/firefox/firstrun/mozilla-uitour.js

Unfocused/mozilla-uitour