CL https://chromium-review.googlesource.com/c/chromium/src/+/1340889.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3b0eebbf70c7102ffd16ffc3078f3aa883df8c0c

commit 3b0eebbf70c7102ffd16ffc3078f3aa883df8c0c
Author: Antonio Gomes <tonikitoo@igalia.com>
Date: Tue Nov 20 12:09:45 2018

[s13n] Migrate the IdentityTestEnvironmentProfileAdaptor clients that pass PrefService to use Builder variant

The "build variant" is more powerful, than the one that takes a |prefs|
as parameter.

TBR=emaxx@chromium.org (chrome/browser/policy/cloud/user_policy_signin_service_unittest.cc)

BUG= 905687 

Change-Id: I622446888ad8e31ef3fd0d464ac5ab25375abf3c
Reviewed-on: https://chromium-review.googlesource.com/c/1340889
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609669}
[modify] https://crrev.com/3b0eebbf70c7102ffd16ffc3078f3aa883df8c0c/chrome/browser/policy/cloud/user_policy_signin_service_unittest.cc
[modify] https://crrev.com/3b0eebbf70c7102ffd16ffc3078f3aa883df8c0c/chrome/browser/signin/identity_test_environment_profile_adaptor.cc
[modify] https://crrev.com/3b0eebbf70c7102ffd16ffc3078f3aa883df8c0c/chrome/browser/signin/identity_test_environment_profile_adaptor.h