GitLab

Support |getAccounts| Gaia request - send |accountsListed| message with
list of emails of accounts in session.

Bug: b/123630392
Change-Id: I2e920bf8a1303a17d70d74f0069a6ad9298aa86d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2353348Reviewed-by: Kush Sinha <sinhak@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Anastasiia N <anastasiian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798569}