GitLab

Specifically ash::mojom::UserInfo. I'm going to need this to have ash call
into wallpaper code, which needs the gaia account.

BUG=756085
TEST=none

Change-Id: I9a9c1970bd3cd28ce36cca3d5ff919225dee8084
Reviewed-on: https://chromium-review.googlesource.com/c/1328564Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607300}