Regression was introduced: 10321.0.0/65.0.3324.0

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d0f5f75db3249839c3cfe9431f12497e46fb6c98

commit d0f5f75db3249839c3cfe9431f12497e46fb6c98
Author: khmel <khmel@google.com>
Date: Thu Feb 08 23:07:14 2018

arc: Fix hidden ToS content in case OOBE opt in.

This fixes the issue in case optimized flow for ToS content
loading document is left hidden.

Test: Manually
Bug:  810193 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I3840b1e37346721e9ed6d6369d4476d47411159e
Reviewed-on: https://chromium-review.googlesource.com/909802
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Yury Khmel <khmel@google.com>
Cr-Commit-Position: refs/heads/master@{#535561}
[modify] https://crrev.com/d0f5f75db3249839c3cfe9431f12497e46fb6c98/chrome/browser/resources/chromeos/arc_support/playstore.js

 Issue 809372  has been merged into this issue.

This bug requires manual review: M65 has already been promoted to the beta branch, so this requires manual review
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/32abf528eefbec689278de134ae15ff4fc8415be

commit 32abf528eefbec689278de134ae15ff4fc8415be
Author: khmel <khmel@google.com>
Date: Tue Feb 20 20:12:23 2018

[Merge M65] arc: Fix hidden ToS content in case OOBE opt in.

This fixes the issue in case optimized flow for ToS content
loading document is left hidden.

TBR=khmel@google.com

(cherry picked from commit d0f5f75db3249839c3cfe9431f12497e46fb6c98)

Test: Manually
Bug:  810193 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I3840b1e37346721e9ed6d6369d4476d47411159e
Reviewed-on: https://chromium-review.googlesource.com/909802
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Yury Khmel <khmel@google.com>
Cr-Original-Commit-Position: refs/heads/master@{#535561}
Reviewed-on: https://chromium-review.googlesource.com/927114
Reviewed-by: Yury Khmel <khmel@chromium.org>
Cr-Commit-Position: refs/branch-heads/3322@{#10}
Cr-Branched-From: 4522efba74e35026b0f62cb1c97d793a92a0d5da-refs/heads/master@{#529187}
[modify] https://crrev.com/32abf528eefbec689278de134ae15ff4fc8415be/chrome/browser/resources/chromeos/arc_support/playstore.js