The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2449cbd81698ee25bf5d0fce27b6d5c65bceb2e6

commit 2449cbd81698ee25bf5d0fce27b6d5c65bceb2e6
Author: Julie Jeongeun Kim <jkim@igalia.com>
Date: Tue Jan 15 15:29:04 2019

[s13n] Move CloudPolicyManagerTest away from using SigninManager

This CL makes CloudPolicyManagerTest use IdentityManager instead
of SigninManager.

SigninManager is going to be an implementation detail of
IdentityManager.

Bug:  920215 
Change-Id: I9f379321fa02133349113c96f60bab5aa27fe7bb
Reviewed-on: https://chromium-review.googlesource.com/c/1411195
Reviewed-by: Julian Pastarmov <pastarmovj@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Commit-Queue: Julie Jeongeun Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#622865}
[modify] https://crrev.com/2449cbd81698ee25bf5d0fce27b6d5c65bceb2e6/chrome/browser/policy/cloud/cloud_policy_manager_browsertest.cc