An Active Directory enrolled device cannot be used for autotests. It looks like the 

Steps To Reproduce:
(1) Enroll the device into an Active Directory domain. Don't add any user, just Gaia login and domain join screen.
(2) Run some autotest, e.g.
      test_that -b $BOARD $DEVICE_IP login_LoginSuccess

Expected Result:
Test succeeds.

Actual Result:
Test gets stuck 100%.

It looks like Chrome restarts immediately and forces the "Sign in to ad.domain.com" screen. The screen requested by the autotest (e.g. Gaia login) is never shown. It's probably related to the presence of install_attributes.pb that lock the device to Active Directory enrollment.