GitLab

"Profile.EphemeralGuest.Signin" metric is recorded when user signs in
to or signs out from a GAIA account in an ephemeral Guest profile.

Bug: 1167474, 1148695
Change-Id: Ib0aa6660c2663083b740a6c393243a0058be78c0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2632694
Auto-Submit: Ramin Halavati <rhalavati@chromium.org>
Commit-Queue: Brian White <bcwhite@chromium.org>
Reviewed-by: Brian White <bcwhite@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845705}