The chromeos.chrome and chromiumos.chromium pfq-informational builders are failing because of Chrome crashes/timeouts:

https://uberchromegw.corp.google.com/i/chromeos.chrome/waterfall

The first failing runs include https://codereview.chromium.org/2150603002 in the change log (ed0d60b) and the following error messages in ui.LATEST:

[8225:8248:0715/102953:ERROR:cloud_policy_validator.cc(472)] Empty device id encountered - expected: 
[8225:8225:0715/102953:ERROR:session_manager_operation.cc(200)] Policy validation failed: 12
[8225:8225:0715/102953:ERROR:device_settings_service.cc(263)] Session manager operation failed: 6
[8225:8225:0715/102953:ERROR:device_settings_provider.cc(834)] Failed to retrieve cros policies. Reason: 6

in login_OwnershipNotRetaken, occurring 1 minute before the timeout.

Strongly suspect https://codereview.chromium.org/2150603002 ( issue 360708 ) although I can't be certain it's the root cause (are we supposed to have device IDs?)