Revert of Use VoiceChannel/VideoChannel directly from RtpSender/RtpReceiver.

Revert of Use VoiceChannel/VideoChannel directly from RtpSender/RtpReceiver. (patchset #3 id:40001 of https://codereview.webrtc.org/2046173002/ )

Reason for revert:
Broke peerconnection_unittest somehow, due to introduction of thread check. Will fix and reland.

Original issue's description:
> Use VoiceChannel/VideoChannel directly from RtpSender/RtpReceiver.
>
> This eliminates the need for the extra layer of indirection provided by
> mediastreamprovider.h. It will thus make it easier to implement new
> functionality in RtpSender/RtpReceiver.
>
> It also brings us one step closer to the end goal of combining "senders"
> and "send streams". Currently the sender still needs to go through the
> BaseChannel and MediaChannel, using an SSRC as a key.
>
> R=pthatcher@webrtc.org
>
> Committed: https://crrev.com/bc5831999d3354509d75357b659b4bb8e39f8a6c
> Cr-Commit-Position: refs/heads/master@{#13285}

TBR=pthatcher@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/1a7162dbc9abb0c8afe3a3ebb3e8af06606875ef
Cr-Commit-Position: refs/heads/master@{#13286}

[Taylor Brandstetter, 2016-06-24 21:12:46]

The CQ bit was checked by deadbeef@webrtc.org

[Taylor Brandstetter, 2016-06-24 21:12:47]

Created Revert of Use VoiceChannel/VideoChannel directly from
RtpSender/RtpReceiver.

[commit-bot: I haz the power, 2016-06-24 21:12:58]

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, 2016-06-24 21:13:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-24 21:13:22]

Description was changed from

==========
Revert of Use VoiceChannel/VideoChannel directly from RtpSender/RtpReceiver.
(patchset #3 id:40001 of https://codereview.webrtc.org/2046173002/ )

Reason for revert:
Broke peerconnection_unittest somehow, due to introduction of thread check. Will
fix and reland.

Original issue's description:
> Use VoiceChannel/VideoChannel directly from RtpSender/RtpReceiver.
> 
> This eliminates the need for the extra layer of indirection provided by
> mediastreamprovider.h. It will thus make it easier to implement new
> functionality in RtpSender/RtpReceiver.
> 
> It also brings us one step closer to the end goal of combining "senders"
> and "send streams". Currently the sender still needs to go through the
> BaseChannel and MediaChannel, using an SSRC as a key.
> 
> R=pthatcher@webrtc.org
> 
> Committed: https://crrev.com/bc5831999d3354509d75357b659b4bb8e39f8a6c
> Cr-Commit-Position: refs/heads/master@{#13285}

TBR=pthatcher@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Use VoiceChannel/VideoChannel directly from RtpSender/RtpReceiver.
(patchset #3 id:40001 of https://codereview.webrtc.org/2046173002/ )

Reason for revert:
Broke peerconnection_unittest somehow, due to introduction of thread check. Will
fix and reland.

Original issue's description:
> Use VoiceChannel/VideoChannel directly from RtpSender/RtpReceiver.
>
> This eliminates the need for the extra layer of indirection provided by
> mediastreamprovider.h. It will thus make it easier to implement new
> functionality in RtpSender/RtpReceiver.
>
> It also brings us one step closer to the end goal of combining "senders"
> and "send streams". Currently the sender still needs to go through the
> BaseChannel and MediaChannel, using an SSRC as a key.
>
> R=pthatcher@webrtc.org
>
> Committed: https://crrev.com/bc5831999d3354509d75357b659b4bb8e39f8a6c
> Cr-Commit-Position: refs/heads/master@{#13285}

TBR=pthatcher@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/1a7162dbc9abb0c8afe3a3ebb3e8af06606875ef
Cr-Commit-Position: refs/heads/master@{#13286}
==========

[commit-bot: I haz the power, 2016-06-24 21:13:26]

Patchset 1 (id:??) landed as
https://crrev.com/1a7162dbc9abb0c8afe3a3ebb3e8af06606875ef
Cr-Commit-Position: refs/heads/master@{#13286}