GitLab

This CL removes AccountTrackerService from signin_view_controller.cc
and uses IdentityManager instead of it.

Bug: 922780
Change-Id: I3bfa8dcfa8cc3722868b9726526357c1c7a9f223
Reviewed-on: https://chromium-review.googlesource.com/c/1436618Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Commit-Queue: Julie Jeongeun Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#626296}