GitLab

Ensure the ScanService can be created in Guest Mode so that users in
Guest Mode can use the Scan app.

Bug: 1059779
Change-Id: I7d596b16f7516c0bf241c933e19be546561dc9d5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2586265Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Commit-Queue: Jesse Schettler <jschettler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#835905}