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 video sending for iOS AppRTCDemo. To repro, run iOS AppRTCDemo in Release in loopback mode. The revision prior to this change worked.

Original issue's description:
> Reland of: 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://chromium.googlesource.com/external/webrtc/+/2d5491783a264c6e57614f87f1a69dc61bf44609

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

Committed: https://crrev.com/3784b4a697d4ca5efb598e8427adbe22752a6f3f
Cr-Commit-Position: refs/heads/master@{#13289}

[tkchin_webrtc, 2016-06-25 02:31:17]

The CQ bit was checked by tkchin@webrtc.org

[tkchin_webrtc, 2016-06-25 02:31:18]

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

[commit-bot: I haz the power, 2016-06-25 02:31:36]

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, 2016-06-25 02:31:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-25 02:31:59]

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 video sending for iOS AppRTCDemo. To repro, run iOS AppRTCDemo in Release
in loopback mode. The revision prior to this change worked.

Original issue's description:
> Reland of: 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://chromium.googlesource.com/external/webrtc/+/2d5491783a264c6e57614f87f...

TBR=pthatcher@webrtc.org,deadbeef@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 video sending for iOS AppRTCDemo. To repro, run iOS AppRTCDemo in Release
in loopback mode. The revision prior to this change worked.

Original issue's description:
> Reland of: 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://chromium.googlesource.com/external/webrtc/+/2d5491783a264c6e57614f87f...

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

Committed: https://crrev.com/3784b4a697d4ca5efb598e8427adbe22752a6f3f
Cr-Commit-Position: refs/heads/master@{#13289}
==========

[commit-bot: I haz the power, 2016-06-25 02:32:00]

Patchset 1 (id:??) landed as
https://crrev.com/3784b4a697d4ca5efb598e8427adbe22752a6f3f
Cr-Commit-Position: refs/heads/master@{#13289}