Fix implicit channel layout configurations at non-1.0 playback rates.

Fix implicit channel layout configurations at non-1.0 playback rates.

Change http://crrev.com/21d17ca06e742cbfdcaaa54e0f4964248e3fbfff
incorrectly assumed the input channel layout never changes. This
patch fixes that issue by allowing the channel mask to change as
layouts change.

BUG=666813
TEST=updated unittests
TEST=http://storage.googleapis.com/chcunningham-chrome-shared/534301/aac_test.html

Committed: https://crrev.com/c242c3a3b9242f63aa079ec10442488d1a6916cb
Cr-Commit-Position: refs/heads/master@{#434868}

[DaleCurtis, 2016-11-28 23:21:11]

dalecurtis@chromium.org changed reviewers:
+ alokp@chromium.org, chcunningham@chromium.org

[DaleCurtis, 2016-11-28 23:21:12]

+alokp for media/cast/test, chris for everything else.

[alokp, 2016-11-28 23:26:35]

chromecast/ lgtm

[DaleCurtis, 2016-11-28 23:29:21]

Description was changed from

==========
Fix implicit channel layout configurations at non-1.0 playback rates.

Change 21d17ca06e742cbfdcaaa54e0f4964248e3fbfff incorrectly assumed
the input channel layout never changes. This patch fixes that issue
by allowing the channel mask to change as layouts change.

BUG=666813
TEST=updated unittests
TEST=http://storage.googleapis.com/chcunningham-chrome-shared/534301/aac_test.html
==========

to

==========
Fix implicit channel layout configurations at non-1.0 playback rates.

Change http://crrev.com/21d17ca06e742cbfdcaaa54e0f4964248e3fbfff
incorrectly assumed the input channel layout never changes. This
patch fixes that issue by allowing the channel mask to change as
layouts change.

BUG=666813
TEST=updated unittests
TEST=http://storage.googleapis.com/chcunningham-chrome-shared/534301/aac_test.html
==========

[chcunningham, 2016-11-29 01:23:10]

lgtm

[DaleCurtis, 2016-11-29 01:25:02]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2016-11-29 01:25:54]

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, 2016-11-29 03:28:35]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1480382702127210, "parent_rev":
"8a552c04c0f21055e5c78ff4d9599d8ec0837be5", "commit_rev":
"d35da1e7a6838809ed351751d3ee201bdb965d45"}

[commit-bot: I haz the power, 2016-11-29 03:29:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-29 03:33:08]

Description was changed from

==========
Fix implicit channel layout configurations at non-1.0 playback rates.

Change http://crrev.com/21d17ca06e742cbfdcaaa54e0f4964248e3fbfff
incorrectly assumed the input channel layout never changes. This
patch fixes that issue by allowing the channel mask to change as
layouts change.

BUG=666813
TEST=updated unittests
TEST=http://storage.googleapis.com/chcunningham-chrome-shared/534301/aac_test.html
==========

to

==========
Fix implicit channel layout configurations at non-1.0 playback rates.

Change http://crrev.com/21d17ca06e742cbfdcaaa54e0f4964248e3fbfff
incorrectly assumed the input channel layout never changes. This
patch fixes that issue by allowing the channel mask to change as
layouts change.

BUG=666813
TEST=updated unittests
TEST=http://storage.googleapis.com/chcunningham-chrome-shared/534301/aac_test.html

Committed: https://crrev.com/c242c3a3b9242f63aa079ec10442488d1a6916cb
Cr-Commit-Position: refs/heads/master@{#434868}
==========

[commit-bot: I haz the power, 2016-11-29 03:33:09]

Patchset 1 (id:??) landed as
https://crrev.com/c242c3a3b9242f63aa079ec10442488d1a6916cb
Cr-Commit-Position: refs/heads/master@{#434868}