New device policies for enterprise auto-update controls.

New device policies for enterprise auto-update controls.

Enterprise admins need more control over the auto-update behavior
of ChromeOS. This CL adds two policies which will provide such
control, one for disabling updates and another for pinning a
device to a particular target version.

BUG=chromium-os:27307
TEST=Update_engine client code builds with new policies.

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=127108

[Mattias Nissler (ping if slow), 2012-03-14 23:12:21]

LGTM

[commit-bot: I haz the power, 2012-03-14 23:17:37]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jaysri@chromium.org/9701047/1003

[commit-bot: I haz the power, 2012-03-15 02:19:16]

Try job failure for 9701047-1003 (retry) (previous was lost) on win for step
"compile" (clobber build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win&number...

[commit-bot: I haz the power, 2012-03-15 19:26:32]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jaysri@chromium.org/9701047/1003

[commit-bot: I haz the power, 2012-03-15 23:34:37]

Commit queue rejected this change because the description was changed
between the time the change entered the commit queue and the time it
was ready to commit. You can safely check the commit box again.

[commit-bot: I haz the power, 2012-03-15 23:59:13]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jaysri@chromium.org/9701047/1003

[Mattias Nissler (ping if slow), 2012-03-16 01:48:37]

still LGTM after the rename in patch set 4

[commit-bot: I haz the power, 2012-03-16 02:00:31]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jaysri@chromium.org/9701047/6004

[commit-bot: I haz the power, 2012-03-16 04:53:45]

Change committed as 127108