GitLab

Add EDU account login handler to fetch user's family members and
getting ReAuthProof token for parent.

Bug: 1043108
Change-Id: Icf4b2782a4e6f114f452468baf09d2478db8d58c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2033156
Commit-Queue: Anastasiia Nikolaienko <anastasiian@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#739305}