GitLab

In EG2 a test that calls disableMockAuthentication must
re-eable on tearDown, or the app_interface can crash from
mismatch enable/disable.

Change-Id: I06c0a2feebb43cf1bcaa9b639a7a29deafa03094
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1953731Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: David Jean <djean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#723300}