Do not watch for low disk events in guest mode.

Do not watch for low disk events in guest mode.

Guest sessions do not store data on the persistent disk and therefore
should not receive notifications regarding low disk space.

BUG=655879
TEST=Log in to device as non-guest
Create a sufficiently large file in Downloads to trigger low disk notifications
Log out
Log in as guest user
Observe that no low disk notification is shown.

Committed: https://crrev.com/44a5f92dde8b3cb2fa8d54b02fa97d08f0ee494a
Cr-Commit-Position: refs/heads/master@{#425823}

[dspaid, 2016-10-14 04:30:56]

dspaid@chromium.org changed reviewers:
+ fukino@chromium.org, oshima@chromium.org

[dspaid, 2016-10-14 04:30:57]

+Oshima for owners approval
+Fukino for context on related issue

[oshima, 2016-10-17 17:13:13]

lgtm

[dspaid, 2016-10-17 22:53:54]

The CQ bit was checked by dspaid@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-10-17 22:54:39]

Dry run: 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, 2016-10-17 23:23:22]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-10-17 23:23:23]

Dry run: This issue passed the CQ dry run.

[dspaid, 2016-10-17 23:53:24]

The CQ bit was checked by dspaid@chromium.org

[commit-bot: I haz the power, 2016-10-17 23:54:10]

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, 2016-10-18 00:00:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-18 00:01:33]

Description was changed from

==========
Do not watch for low disk events in guest mode.

Guest sessions do not store data on the persistent disk and therefore
should not receive notifications regarding low disk space.

BUG=655879
TEST=Log in to device as non-guest
Create a sufficiently large file in Downloads to trigger low disk notifications
Log out
Log in as guest user
Observe that no low disk notification is shown.
==========

to

==========
Do not watch for low disk events in guest mode.

Guest sessions do not store data on the persistent disk and therefore
should not receive notifications regarding low disk space.

BUG=655879
TEST=Log in to device as non-guest
Create a sufficiently large file in Downloads to trigger low disk notifications
Log out
Log in as guest user
Observe that no low disk notification is shown.

Committed: https://crrev.com/44a5f92dde8b3cb2fa8d54b02fa97d08f0ee494a
Cr-Commit-Position: refs/heads/master@{#425823}
==========

[commit-bot: I haz the power, 2016-10-18 00:01:34]

Patchset 1 (id:??) landed as
https://crrev.com/44a5f92dde8b3cb2fa8d54b02fa97d08f0ee494a
Cr-Commit-Position: refs/heads/master@{#425823}