GitLab

When the sessions are being restored, the UserAgent is wrongly restored
because the AUTOMATIC description wasn't added to the list of string
describing the different UserAgent.

Fixed: 1097794
Change-Id: Idf6d4e68a2e7b1ae634809deba2c7e03f3a2ac88
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2256216
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Auto-Submit: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Ali Juma <ajuma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#781851}