Revert of [Sync] IWYU cleanup.

Revert of [Sync] IWYU cleanup. (patchset #1 id:1 of https://codereview.chromium.org/2460703005/ )

Reason for revert:
Likely made sync tests flaky. See https://bugs.chromium.org/p/chromium/issues/detail?id=660655 for more details.

BUG=660655
Original issue's description:
> [Sync] IWYU cleanup.
>
> BUG=
>
> Committed: https://crrev.com/ef2d347246bfc3cb768a92a5000883379bd51b88
> Cr-Commit-Position: refs/heads/master@{#428559}

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

Committed: https://crrev.com/e8d55b3d552a5d23c8c71da157c2f4bbdab56130
Cr-Commit-Position: refs/heads/master@{#428685}

[phoglund_chromium, 2016-10-31 10:27:25]

The CQ bit was checked by phoglund@chromium.org

[phoglund_chromium, 2016-10-31 10:27:26]

Created Revert of [Sync] IWYU cleanup.

[commit-bot: I haz the power, 2016-10-31 10:27:42]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-31 11:14:12]

Description was changed from

==========
Revert of [Sync] IWYU cleanup. (patchset #1 id:1 of
https://codereview.chromium.org/2460703005/ )

Reason for revert:
Likely made sync tests flaky. See
https://bugs.chromium.org/p/chromium/issues/detail?id=660655 for more details.

BUG=660655

Original issue's description:
> [Sync] IWYU cleanup.
> 
> BUG=
> 
> Committed: https://crrev.com/ef2d347246bfc3cb768a92a5000883379bd51b88
> Cr-Commit-Position: refs/heads/master@{#428559}

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

to

==========
Revert of [Sync] IWYU cleanup. (patchset #1 id:1 of
https://codereview.chromium.org/2460703005/ )

Reason for revert:
Likely made sync tests flaky. See
https://bugs.chromium.org/p/chromium/issues/detail?id=660655 for more details.

BUG=660655

Original issue's description:
> [Sync] IWYU cleanup.
> 
> BUG=
> 
> Committed: https://crrev.com/ef2d347246bfc3cb768a92a5000883379bd51b88
> Cr-Commit-Position: refs/heads/master@{#428559}

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

[commit-bot: I haz the power, 2016-10-31 11:14:13]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-31 11:16:21]

Description was changed from

==========
Revert of [Sync] IWYU cleanup. (patchset #1 id:1 of
https://codereview.chromium.org/2460703005/ )

Reason for revert:
Likely made sync tests flaky. See
https://bugs.chromium.org/p/chromium/issues/detail?id=660655 for more details.

BUG=660655

Original issue's description:
> [Sync] IWYU cleanup.
> 
> BUG=
> 
> Committed: https://crrev.com/ef2d347246bfc3cb768a92a5000883379bd51b88
> Cr-Commit-Position: refs/heads/master@{#428559}

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

to

==========
Revert of [Sync] IWYU cleanup. (patchset #1 id:1 of
https://codereview.chromium.org/2460703005/ )

Reason for revert:
Likely made sync tests flaky. See
https://bugs.chromium.org/p/chromium/issues/detail?id=660655 for more details.

BUG=660655

Original issue's description:
> [Sync] IWYU cleanup.
>
> BUG=
>
> Committed: https://crrev.com/ef2d347246bfc3cb768a92a5000883379bd51b88
> Cr-Commit-Position: refs/heads/master@{#428559}

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

Committed: https://crrev.com/e8d55b3d552a5d23c8c71da157c2f4bbdab56130
Cr-Commit-Position: refs/heads/master@{#428685}
==========

[commit-bot: I haz the power, 2016-10-31 11:16:22]

Patchset 1 (id:??) landed as
https://crrev.com/e8d55b3d552a5d23c8c71da157c2f4bbdab56130
Cr-Commit-Position: refs/heads/master@{#428685}