GitLab

Updates browser unittest and Browser Close unittest to cover ephemeral
Guest profiles.

Please see go/ephemeral-guest-profiles for more context.

Bug: 1125474
Change-Id: I62ab9f41abac7eedff1ff3b61e140997d95a12cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2502369Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824413}