Simplify contextDestroyed() notifications.

Simplify contextDestroyed() notifications.

With all lifetime observers now being managed by Oilpan, the
handling of the destruct notification can be made simpler.

R=
BUG=

Committed: https://crrev.com/b8712f9815fedfc865b553486bcf2aab0a7a360c
Cr-Commit-Position: refs/heads/master@{#398490}

[sof, 2016-06-07 14:37:30]

Description was changed from

==========
Clear out observers after contextDestroyed() notification.

R=
BUG=
==========

to

==========
Simplify contextDestroyed() notifications.

With all lifetime observers now being managed by Oilpan, the
handling of the destruct notification can be made simpler. 

R=
BUG=
==========

[sof, 2016-06-07 15:04:04]

sigbjornf@opera.com changed reviewers:
+ oilpan-reviews@chromium.org

[sof, 2016-06-07 15:04:04]

please take a look.

[haraken, 2016-06-07 23:55:04]

LGTM

[sof, 2016-06-08 05:13:58]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2016-06-08 05:14:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2045703004/20001

[commit-bot: I haz the power, 2016-06-08 06:06:12]

Description was changed from

==========
Simplify contextDestroyed() notifications.

With all lifetime observers now being managed by Oilpan, the
handling of the destruct notification can be made simpler. 

R=
BUG=
==========

to

==========
Simplify contextDestroyed() notifications.

With all lifetime observers now being managed by Oilpan, the
handling of the destruct notification can be made simpler. 

R=
BUG=
==========

[commit-bot: I haz the power, 2016-06-08 06:06:13]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-06-08 06:07:41]

Description was changed from

==========
Simplify contextDestroyed() notifications.

With all lifetime observers now being managed by Oilpan, the
handling of the destruct notification can be made simpler. 

R=
BUG=
==========

to

==========
Simplify contextDestroyed() notifications.

With all lifetime observers now being managed by Oilpan, the
handling of the destruct notification can be made simpler.

R=
BUG=

Committed: https://crrev.com/b8712f9815fedfc865b553486bcf2aab0a7a360c
Cr-Commit-Position: refs/heads/master@{#398490}
==========

[commit-bot: I haz the power, 2016-06-08 06:07:42]

Patchset 2 (id:??) landed as
https://crrev.com/b8712f9815fedfc865b553486bcf2aab0a7a360c
Cr-Commit-Position: refs/heads/master@{#398490}