CL: https://codereview.chromium.org/2531063002/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/020311f0c2abd317c7df310cd7aa9829dabe781c

commit 020311f0c2abd317c7df310cd7aa9829dabe781c
Author: tnagel <tnagel@chromium.org>
Date: Thu Dec 01 20:53:44 2016

Implement FakeAuthPolicyClient::RefreshDevicePolicy()

To allow testing of Active Directory device policy with a fake D-Bus
client, simulate the combined actions of authpolicyd and session manager
by writing a minimal PolicyFetchResponse to stub_device_policy.

BUG= 667780 

Review-Url: https://codereview.chromium.org/2531063002
Cr-Commit-Position: refs/heads/master@{#435706}

[modify] https://crrev.com/020311f0c2abd317c7df310cd7aa9829dabe781c/chromeos/BUILD.gn
[modify] https://crrev.com/020311f0c2abd317c7df310cd7aa9829dabe781c/chromeos/DEPS
[modify] https://crrev.com/020311f0c2abd317c7df310cd7aa9829dabe781c/chromeos/dbus/fake_auth_policy_client.cc
[modify] https://crrev.com/020311f0c2abd317c7df310cd7aa9829dabe781c/chromeos/dbus/fake_auth_policy_client.h

bulk Verify of Chromad V1 bugs