Re-enable ProcessPriorityAfterStoppedAudio test on Windows.

I can no longer repro locally.

BUG=616421
Committed: https://crrev.com/ebca0939c5c1adefb92df85d1a085d1bc6999f5b
Cr-Commit-Position: refs/heads/master@{#409505}

[sebsg, 2016-08-02 21:45:23]

Patchset #1 (id:1) has been deleted

[sebsg, 2016-08-02 21:48:05]

Description was changed from

==========
WIP

BUG=
==========

to

==========
I can no longer repro locally.

BUG=616421
==========

[sebsg, 2016-08-02 21:48:05]

sebsg@chromium.org changed reviewers:
+ gab@chromium.org

[sebsg, 2016-08-02 21:52:27]

sebsg@chromium.org changed reviewers:
+ thestig@chromium.org
- gab@chromium.org

[sebsg, 2016-08-02 21:52:28]

Hi Lei,

I investigated this flaky test before leaving on vacation and could reproduce
the flakiness then (about a month ago). I have run it over 500 times locally
today and it has not failed a single time (used to fail once per 20-30 runs). Do
you think we could re-enable it? 

Thanks

[Lei Zhang, 2016-08-02 22:47:35]

lgtm

Let's try. Good luck.

[sebsg, 2016-08-03 13:17:56]

The CQ bit was checked by sebsg@chromium.org

[commit-bot: I haz the power, 2016-08-03 13:18:09]

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, 2016-08-03 13:54:26]

Description was changed from

==========
I can no longer repro locally.

BUG=616421
==========

to

==========
I can no longer repro locally.

BUG=616421
==========

[commit-bot: I haz the power, 2016-08-03 13:54:26]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2016-08-03 13:56:58]

Description was changed from

==========
I can no longer repro locally.

BUG=616421
==========

to

==========
I can no longer repro locally.

BUG=616421

Committed: https://crrev.com/ebca0939c5c1adefb92df85d1a085d1bc6999f5b
Cr-Commit-Position: refs/heads/master@{#409505}
==========

[commit-bot: I haz the power, 2016-08-03 13:56:59]

Patchset 1 (id:??) landed as
https://crrev.com/ebca0939c5c1adefb92df85d1a085d1bc6999f5b
Cr-Commit-Position: refs/heads/master@{#409505}