Fix for MediaSessionObserver.stopObserving

Fox for MediaSessionObserver.stopObserving

MediaSessionObserver should remove the reference to MediaSessionImpl
when it stops observing. This CL fixes this issue.

BUG=658678
Committed: https://crrev.com/59cad301881152cdc22382923cb2ccbc8b56bbbc
Cr-Commit-Position: refs/heads/master@{#429037}

[Zhiqiang Zhang (Slow), 2016-11-01 16:46:56]

Description was changed from

==========
Hotfix MediaSessionObserver.stopObserving

MediaSessionObserver should remove the reference to MediaSessionImpl
when it stops observing. This CL fixes this issue.

BUG=658678
==========

to

==========
Fox for MediaSessionObserver.stopObserving

MediaSessionObserver should remove the reference to MediaSessionImpl
when it stops observing. This CL fixes this issue.

BUG=658678
==========

[Zhiqiang Zhang (Slow), 2016-11-01 16:48:17]

zqzhang@chromium.org changed reviewers:
+ boliu@chromium.org

[Zhiqiang Zhang (Slow), 2016-11-01 16:48:18]

PTAL

Just found I forgot to dereference when stop observing in Java.

[boliu, 2016-11-01 16:51:03]

lgtm

does it really matter though?

[Zhiqiang Zhang (Slow), 2016-11-01 17:00:29]

On 2016/11/01 16:51:03, boliu wrote:
> lgtm
> 
> does it really matter though?

Just for consistency with native :)

[Zhiqiang Zhang (Slow), 2016-11-01 17:00:32]

The CQ bit was checked by zqzhang@chromium.org

[commit-bot: I haz the power, 2016-11-01 17:01:40]

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, 2016-11-01 17:37:32]

Description was changed from

==========
Fox for MediaSessionObserver.stopObserving

MediaSessionObserver should remove the reference to MediaSessionImpl
when it stops observing. This CL fixes this issue.

BUG=658678
==========

to

==========
Fox for MediaSessionObserver.stopObserving

MediaSessionObserver should remove the reference to MediaSessionImpl
when it stops observing. This CL fixes this issue.

BUG=658678
==========

[commit-bot: I haz the power, 2016-11-01 17:37:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-01 17:53:13]

Description was changed from

==========
Fox for MediaSessionObserver.stopObserving

MediaSessionObserver should remove the reference to MediaSessionImpl
when it stops observing. This CL fixes this issue.

BUG=658678
==========

to

==========
Fox for MediaSessionObserver.stopObserving

MediaSessionObserver should remove the reference to MediaSessionImpl
when it stops observing. This CL fixes this issue.

BUG=658678

Committed: https://crrev.com/59cad301881152cdc22382923cb2ccbc8b56bbbc
Cr-Commit-Position: refs/heads/master@{#429037}
==========

[commit-bot: I haz the power, 2016-11-01 17:53:14]

Patchset 1 (id:??) landed as
https://crrev.com/59cad301881152cdc22382923cb2ccbc8b56bbbc
Cr-Commit-Position: refs/heads/master@{#429037}