Revert of Don't install OEM default apps for enterprise users

Revert of Don't install OEM default apps for enterprise users (patchset #1 id:1 of https://codereview.chromium.org/1144033003/)

Reason for revert:
This change needs to be more selective and don't install only some OEM apps.

Original issue's description:
> Don't install OEM default apps for enterprise users
>
> Enterprise admins would liked to control apps that will be installed for their users.
> To allow admins to don't track and block OEM apps one by one disable OEM apps installation.
>
> BUG=486862
> TEST=manual
>
> Committed: https://crrev.com/e4cf320853691e8a2ef98b763bf4162a53b51bfc
> Cr-Commit-Position: refs/heads/master@{#330917}

TBR=asargent@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=486862
Committed: https://crrev.com/d0be494af5fff50d231e7f79b4ff44369634ee9a
Cr-Commit-Position: refs/heads/master@{#331762}

[Dmitry Polukhin, 2015-05-28 09:42:51]

Created Revert of Don't install OEM default apps for enterprise users

[commit-bot: I haz the power, 2015-05-28 09:43:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1149963003/1

[commit-bot: I haz the power, 2015-05-28 09:43:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-28 09:44:46]

Patchset 1 (id:??) landed as
https://crrev.com/d0be494af5fff50d231e7f79b4ff44369634ee9a
Cr-Commit-Position: refs/heads/master@{#331762}