GitLab

Added browsertests to test that the login screen warnings
for the managed-guest sessions are controlled via
ManagedGuestSessionPrivacyWarningsEnabled policy, which
was added by this CL crrev.com/c/2254605.

Bug: 1099648
Change-Id: I18b7d0b15ca13182ff62b3bc23d3378aa59ced3e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2270458
Commit-Queue: Aya Elsayed <ayaelattar@google.com>
Reviewed-by: Roman Sorokin [CET] <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#783864}