The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/227851d714bdc081de4c7e81669420380fa6c000

commit 227851d714bdc081de4c7e81669420380fa6c000
Author: Muyuan Li <muyuanli@chromium.org>
Date: Tue Feb 13 20:16:02 2018

arc: add test for blocking incognito windows in screenshot

BUG= 778852 
TEST=ArcVoiceInteractionFrameworkServiceUnittest.
  CapturingScreenshotBlocksIncognitoWindows

Change-Id: I0bfa5a486759783d7c8926a309c6b5da9b02dcc6
Reviewed-on: https://chromium-review.googlesource.com/914983
Commit-Queue: Muyuan Li <muyuanli@chromium.org>
Reviewed-by: Luis Hector Chavez <lhchavez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536438}
[modify] https://crrev.com/227851d714bdc081de4c7e81669420380fa6c000/chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service.cc
[modify] https://crrev.com/227851d714bdc081de4c7e81669420380fa6c000/chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service.h
[modify] https://crrev.com/227851d714bdc081de4c7e81669420380fa6c000/chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service_unittest.cc