As per discussions on crbug.com/888711, the Chrome UI team is probably going to be changing the behavior of SystemWebDialog (our setup flow is a SystemWebDialog) such that it does not maximize to fullscreen in tablet mode (this is the opposite of the current behavior). We need to migrate our flow to just a WebDialog so that we have the flexibility to maximize our dialog in tablet mode. The migration should be trivial.
The fix for crbug.com/888711 is aimed for M72, so I've set the milestone for this bug to M72 as well.
Comment 1 by hansberry@chromium.org
, Nov 29