GitLab

Act directly on changes to policy data. Do not store a CrOS setting
for when an enrollment identifier is needed. Do not convert the
current policy in ChromeDeviceSettingsProto to anything (it will be
removed).

BUG=chromium:778535
TEST=unit_tests

Change-Id: I49fb2537556f9e3781267f9eb2ede1b2d5dee964
Reviewed-on: https://chromium-review.googlesource.com/827575Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524523}