GitLab

In-session auth dialog controller needs a way to authenticate
the user upon user interaction with the dialog. This client
class is responsible for handling the authentication by talking
to chromeos::ExtendedAuthenticator.

Bug: b:156258540
Change-Id: Ibd0b9ddc0d8bad01580afc8d56edcb354e2ab72e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2337540Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Yicheng Li <yichengli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795248}