crrev.com/c/1000012 adds a new enrollment mode, MODE_OFFLINE_DEMO for the offline demo mode.
chrome/browser/chromeos/login/enrollment_uma.cc is taking care of the UMA histogram for all enrollment modes, including this offline demo. It's unclear what's the expected behavior, since the offline demo mode should be done completely offline so there's no chances to send any metrics in that mode. But this function or someone else might want to consider sending the metrics of the offline demo mode when it becomes online?
Comment 1 by bugdroid1@chromium.org
, Jun 21 2018