Revert of Implemented OwnerSettingsService::Set() method.

Revert of Implemented OwnerSettingsService::Set() method. (patchset #7 id:160001 of https://codereview.chromium.org/654263003/)

Reason for revert:
ASAN bot unhappy

http://build.chromium.org/p/chromium.memory/builders/Linux%20Chromium%20OS%20ASan%20LSan%20Tests%20%281%29/builds/3731

Original issue's description:
> Implemented OwnerSettingsService::Set() method.
>
> BUG=230018
> TEST=unit_tests:OwnerSettingsServiceChromeOSTest.*
>
> Committed: https://crrev.com/5fa0ee22683b92d67e07c060e8c7a3c4cced51ee
> Cr-Commit-Position: refs/heads/master@{#301132}

TBR=mnissler@chromium.org,pastarmovj@chromium.org,ygorshenin@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=230018
Committed: https://crrev.com/5e64220166aa85f47fa9b8dd5db53254bc95487f
Cr-Commit-Position: refs/heads/master@{#301161}

[Avi (use Gerrit), 2014-10-24 19:03:02]

Created Revert of Implemented OwnerSettingsService::Set() method.

[commit-bot: I haz the power, 2014-10-24 19:05:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/640063008/1

[commit-bot: I haz the power, 2014-10-24 19:07:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-24 19:08:16]

Patchset 1 (id:??) landed as
https://crrev.com/5e64220166aa85f47fa9b8dd5db53254bc95487f
Cr-Commit-Position: refs/heads/master@{#301161}