Revert of Support external audio mixer.

Revert of Support external audio mixer. (patchset #5 id:140001 of https://codereview.webrtc.org/2539213003/ )

Reason for revert:
A interface change broke some downstream code in google3.

Original issue's description:
> Support external audio mixer in webrtc.
>
> An external audio mixer will be passed from PeerConnectionFactory to
> AudioTransportProxy.
>
> BUG=webrtc:6457
>
> Committed: https://crrev.com/f6bcac59e88c3be5ffd73bbb1098f2d82ee316a1
> Cr-Commit-Position: refs/heads/master@{#15556}

TBR=solenberg@webrtc.org,aleloi@webrtc.org,deadbeef@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6457
Committed: https://crrev.com/39ce11f7f65d773c09e540774900e206b5be06fc
Cr-Commit-Position: refs/heads/master@{#15557}

[GeorgeZ, 2016-12-13 01:03:19]

The CQ bit was checked by gyzhou@chromium.org

[GeorgeZ, 2016-12-13 01:03:19]

Created Revert of Support external audio mixer.

[commit-bot: I haz the power, 2016-12-13 01:03:23]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2016-12-13 01:03:23]

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

[commit-bot: I haz the power, 2016-12-13 01:03:24]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
Committers are members of the group "project-webrtc-committers".
Note that this has nothing to do with OWNERS files.

[GeorgeZ, 2016-12-13 01:04:29]

gyzhou@chromium.org changed reviewers:
+ emircan@chromium.org

[emircan, 2016-12-13 01:04:51]

On 2016/12/13 01:04:30, GeorgeZ wrote:

lgtm for revert

[GeorgeZ, 2016-12-13 01:06:22]

The CQ bit was checked by gyzhou@chromium.org

[commit-bot: I haz the power, 2016-12-13 01:06:38]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2016-12-13 01:06:51]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481591182874020, "parent_rev":
"13f65ce8aac63efd7107bb18e73b93a13b1b8511", "commit_rev":
"eb3453a21670d9d916149cd715bd487959d7971d"}

[commit-bot: I haz the power, 2016-12-13 01:06:54]

Description was changed from

==========
Revert of Support external audio mixer. (patchset #5 id:140001 of
https://codereview.webrtc.org/2539213003/ )

Reason for revert:
A interface change broke some downstream code in google3.

Original issue's description:
> Support external audio mixer in webrtc.
> 
> An external audio mixer will be passed from PeerConnectionFactory to
> AudioTransportProxy.
> 
> BUG=webrtc:6457
> 
> Committed: https://crrev.com/f6bcac59e88c3be5ffd73bbb1098f2d82ee316a1
> Cr-Commit-Position: refs/heads/master@{#15556}

TBR=solenberg@webrtc.org,aleloi@webrtc.org,deadbeef@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6457
==========

to

==========
Revert of Support external audio mixer. (patchset #5 id:140001 of
https://codereview.webrtc.org/2539213003/ )

Reason for revert:
A interface change broke some downstream code in google3.

Original issue's description:
> Support external audio mixer in webrtc.
> 
> An external audio mixer will be passed from PeerConnectionFactory to
> AudioTransportProxy.
> 
> BUG=webrtc:6457
> 
> Committed: https://crrev.com/f6bcac59e88c3be5ffd73bbb1098f2d82ee316a1
> Cr-Commit-Position: refs/heads/master@{#15556}

TBR=solenberg@webrtc.org,aleloi@webrtc.org,deadbeef@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6457

Review-Url: https://codereview.webrtc.org/2562333003
==========

[commit-bot: I haz the power, 2016-12-13 01:06:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-13 01:07:04]

Description was changed from

==========
Revert of Support external audio mixer. (patchset #5 id:140001 of
https://codereview.webrtc.org/2539213003/ )

Reason for revert:
A interface change broke some downstream code in google3.

Original issue's description:
> Support external audio mixer in webrtc.
> 
> An external audio mixer will be passed from PeerConnectionFactory to
> AudioTransportProxy.
> 
> BUG=webrtc:6457
> 
> Committed: https://crrev.com/f6bcac59e88c3be5ffd73bbb1098f2d82ee316a1
> Cr-Commit-Position: refs/heads/master@{#15556}

TBR=solenberg@webrtc.org,aleloi@webrtc.org,deadbeef@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6457

Review-Url: https://codereview.webrtc.org/2562333003
==========

to

==========
Revert of Support external audio mixer. (patchset #5 id:140001 of
https://codereview.webrtc.org/2539213003/ )

Reason for revert:
A interface change broke some downstream code in google3.

Original issue's description:
> Support external audio mixer in webrtc.
>
> An external audio mixer will be passed from PeerConnectionFactory to
> AudioTransportProxy.
>
> BUG=webrtc:6457
>
> Committed: https://crrev.com/f6bcac59e88c3be5ffd73bbb1098f2d82ee316a1
> Cr-Commit-Position: refs/heads/master@{#15556}

TBR=solenberg@webrtc.org,aleloi@webrtc.org,deadbeef@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6457

Committed: https://crrev.com/39ce11f7f65d773c09e540774900e206b5be06fc
Cr-Commit-Position: refs/heads/master@{#15557}
==========

[commit-bot: I haz the power, 2016-12-13 01:07:05]

Patchset 1 (id:??) landed as
https://crrev.com/39ce11f7f65d773c09e540774900e206b5be06fc
Cr-Commit-Position: refs/heads/master@{#15557}

[the sun, 2016-12-13 07:58:52]

lgtm