So, Know them neat little panels you can turn on in chrome://flags? Now forget about them! you never seen’em! got it?! Now scram kid. Seriously though, apparently they’re gone with the latest chrome Version - 54.0.2840.6 dev-m (64-bit).
Soon as I noticed the panels are gone I then found out, while checking google about the panel thing, that Google is discontinuing the chrome apps for desktop on Windows Linux and Mac by 2018.