Prevent single-app kiosk mode auto-launch if device is disabled

Prevent single-app kiosk mode auto-launch if device is disabled

If a device is disabled, it should show the disabled screen and not
start any sessions. Regular sessions, auto-launch for public sessions
and auto-launch for consumer kiosk mode respected this. Auto-launch
for enterprise kiosk mode takes a different code path that had
slipped through the cracks. The effect was that single-app kiosk mode
would auto-launch even if a device was disabled.

BUG=454005
TEST=New browser test

Committed: https://crrev.com/0ec3b217448a4c76a77c43e558687df18a61c20e
Cr-Commit-Position: refs/heads/master@{#314330}

[bartfab (slow), 2015-02-02 19:19:18]

bartfab@chromium.org changed reviewers:
+ antrim@chromium.org

[bartfab (slow), 2015-02-02 19:19:18]

Hi Denis,

Could you take a look please?

[Denis Kuznetsov (DE-MUC), 2015-02-03 13:44:10]

lgtm

[bartfab (slow), 2015-02-03 14:06:22]

The CQ bit was checked by bartfab@chromium.org

[commit-bot: I haz the power, 2015-02-03 14:06:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/882043006/1

[commit-bot: I haz the power, 2015-02-03 14:51:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-03 14:52:24]

Patchset 1 (id:??) landed as
https://crrev.com/0ec3b217448a4c76a77c43e558687df18a61c20e
Cr-Commit-Position: refs/heads/master@{#314330}