The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1c7841e8e0322b8c3599710e017ff0fb38ab056f

commit 1c7841e8e0322b8c3599710e017ff0fb38ab056f
Author: dspaid <dspaid@chromium.org>
Date: Mon Aug 01 04:42:12 2016

Make the ARC opt-in preference not synced.

If we sync the ARC opt-in prefence we may cause unintentional data loss
when the user opts-out of ARC on one device.

BUG= 633017 
TEST=Manually test by opting out of ARC on one machine and observing a
second (opted-in) machine's state.

Review-Url: https://codereview.chromium.org/2198733002
Cr-Commit-Position: refs/heads/master@{#408909}

[modify] https://crrev.com/1c7841e8e0322b8c3599710e017ff0fb38ab056f/chrome/browser/chromeos/arc/arc_auth_service.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/47c3d35e31beabc6f54bd10b3efe188978caae6e

commit 47c3d35e31beabc6f54bd10b3efe188978caae6e
Author: khmel <khmel@chromium.org>
Date: Thu Aug 04 20:37:27 2016

Revert of Make the ARC opt-in preference not synced. (patchset #1 id:1 of https://codereview.chromium.org/2198733002/ )

Reason for revert:
This introduces UI regression (Arc start notification is shown on each device on each update). Also this breaks UMA statistics.

Original issue's description:
> Make the ARC opt-in preference not synced.
>
> If we sync the ARC opt-in prefence we may cause unintentional data loss
> when the user opts-out of ARC on one device.
>
> BUG= 633017 
> TEST=Manually test by opting out of ARC on one machine and observing a
> second (opted-in) machine's state.
>
> Committed: https://crrev.com/1c7841e8e0322b8c3599710e017ff0fb38ab056f
> Cr-Commit-Position: refs/heads/master@{#408909}

TBR=hidehiko@chromium.org,dspaid@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG= 633017 

Review-Url: https://codereview.chromium.org/2215943002
Cr-Commit-Position: refs/heads/master@{#409891}

[modify] https://crrev.com/47c3d35e31beabc6f54bd10b3efe188978caae6e/chrome/browser/chromeos/arc/arc_auth_service.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/176f6733ab5bdf6de91f08e840b814cf76b910bb

commit 176f6733ab5bdf6de91f08e840b814cf76b910bb
Author: dspaid <dspaid@chromium.org>
Date: Wed Aug 10 07:29:14 2016

Do not sync the ARC++ opt-in preference.

This is a re-implementation of 1c7841e8e0322b8c3599710e017ff0fb38ab056f,
which made ARC opt-in preference not synced.  That change also stopped
sending UMA stats due to not calling the OnSyncedPrefChanged method.

BUG= 633017 
TEST=browser_tests --gtest_filter=ArcAuthServiceTest.*
Additionally manually tested that the normal opt-in/opt-out process
worked as expected.

Review-Url: https://codereview.chromium.org/2206883002
Cr-Commit-Position: refs/heads/master@{#410994}

[modify] https://crrev.com/176f6733ab5bdf6de91f08e840b814cf76b910bb/chrome/browser/chromeos/arc/arc_auth_service.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/176f6733ab5bdf6de91f08e840b814cf76b910bb

commit 176f6733ab5bdf6de91f08e840b814cf76b910bb
Author: dspaid <dspaid@chromium.org>
Date: Wed Aug 10 07:29:14 2016

Do not sync the ARC++ opt-in preference.

This is a re-implementation of 1c7841e8e0322b8c3599710e017ff0fb38ab056f,
which made ARC opt-in preference not synced.  That change also stopped
sending UMA stats due to not calling the OnSyncedPrefChanged method.

BUG= 633017 
TEST=browser_tests --gtest_filter=ArcAuthServiceTest.*
Additionally manually tested that the normal opt-in/opt-out process
worked as expected.

Review-Url: https://codereview.chromium.org/2206883002
Cr-Commit-Position: refs/heads/master@{#410994}

[modify] https://crrev.com/176f6733ab5bdf6de91f08e840b814cf76b910bb/chrome/browser/chromeos/arc/arc_auth_service.cc

Your change meets the bar and is auto-approved for M53 (branch: 2785)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d4c42540ffb0052ca31f9ca429920c95fba10b3d

commit d4c42540ffb0052ca31f9ca429920c95fba10b3d
Author: dspaid <dspaid@chromium.org>
Date: Sun Aug 14 23:03:01 2016

Do not sync the ARC++ opt-in preference.

This is a re-implementation of 1c7841e8e0322b8c3599710e017ff0fb38ab056f,
which made ARC opt-in preference not synced.  That change also stopped
sending UMA stats due to not calling the OnSyncedPrefChanged method.

BUG= 633017 
TEST=browser_tests --gtest_filter=ArcAuthServiceTest.*
Additionally manually tested that the normal opt-in/opt-out process
worked as expected.
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2206883002
Cr-Commit-Position: refs/heads/master@{#410994}
(cherry picked from commit 176f6733ab5bdf6de91f08e840b814cf76b910bb)

Review-Url: https://codereview.chromium.org/2235313003
Cr-Commit-Position: refs/branch-heads/2785@{#583}
Cr-Branched-From: 68623971be0cfc492a2cb0427d7f478e7b214c24-refs/heads/master@{#403382}

[modify] https://crrev.com/d4c42540ffb0052ca31f9ca429920c95fba10b3d/chrome/browser/chromeos/arc/arc_auth_service.cc

Verified in b/30130436