This is more of an enhancement but its really nice for if you add the desktop icons thing

[arthurmelton]

so this is just a simple line of code and that is document.body.requestFullscreen(); just run it like on this URL https://stadia.google.com/player/* and it should work great. The reason you would want this :
if you run that line of code it will just run as fullscreen and it will be really cool, (get tampermonkey and get this script "https://pastebin.com/nFUnrGBC" and use one of your desktop icon things) so if you ever add it back add this js to it