Removes tracking for fake audio streams.

Removes tracking for fake audio streams.

Fake audio streams no longer hold raw pointer for AudioManager. So even
if fake streams outlive AudioManager, there is no concern for
use-after-free bugs.

BUG=608049
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

[alokp, 2016-11-16 06:16:06]

Description was changed from

==========
Removes tracking for fake audio streams.

Fake audio streams no longer hold raw pointer for AudioManager. So even
if fake streams outlive AudioManager, there is no concern for
use-after-free bugs.

BUG=608049
==========

to

==========
Removes tracking for fake audio streams.

Fake audio streams no longer hold raw pointer for AudioManager. So even
if fake streams outlive AudioManager, there is no concern for
use-after-free bugs.

BUG=608049
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
==========

[alokp, 2016-11-16 06:16:11]

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

[commit-bot: I haz the power, 2016-11-16 06:16:42]

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, 2016-11-16 06:34:07]

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

[commit-bot: I haz the power, 2016-11-16 06:34:08]

Dry run: Try jobs failed on following builders:
  android_clang_dbg_recipe on master.tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/android_clan...)

[DaleCurtis, 2016-11-16 21:57:29]

dalecurtis@chromium.org changed reviewers:
+ dalecurtis@chromium.org

[DaleCurtis, 2016-11-16 21:57:29]

Don't want to take this approach because it special cases the fake stream away
from standard AudioOutputStream behavior.