The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/autotest/+/208aaf3cf1422d0f9eec201154f19a53b55c7e38

commit 208aaf3cf1422d0f9eec201154f19a53b55c7e38
Author: Ruben Zakarian <rzakarian@google.com>
Date: Thu Jan 03 02:14:08 2019

[Autotest] policy_IncognitoModeAvailability

If the policy is set to Available then the user will be able to open
a new Incognito window. If the policy is Disabled then the user should not
be able to open a new Incognito window.

BUG= chromium:917007 
TEST=this

Change-Id: Icf6fb212db6104afbbbeb51f3edced057b8cf531
Reviewed-on: https://chromium-review.googlesource.com/1387224
Commit-Ready: Ruben Zakarian <rzakarian@chromium.org>
Tested-by: Ruben Zakarian <rzakarian@chromium.org>
Reviewed-by: Ruben Zakarian <rzakarian@chromium.org>

[add] https://crrev.com/208aaf3cf1422d0f9eec201154f19a53b55c7e38/client/site_tests/policy_IncognitoModeAvailability/policy_IncognitoModeAvailability.py
[add] https://crrev.com/208aaf3cf1422d0f9eec201154f19a53b55c7e38/client/cros/input_playback/keyboard_ctrl+shift+n
[add] https://crrev.com/208aaf3cf1422d0f9eec201154f19a53b55c7e38/client/site_tests/policy_IncognitoModeAvailability/control
[add] https://crrev.com/208aaf3cf1422d0f9eec201154f19a53b55c7e38/client/site_tests/policy_IncognitoModeAvailability/control.Disabled
[add] https://crrev.com/208aaf3cf1422d0f9eec201154f19a53b55c7e38/client/site_tests/policy_IncognitoModeAvailability/control.Available