Reland of Implemented the GetSources() in native code.

Reland of Implemented the GetSources() in native code. (patchset #1 id:1 of https://codereview.webrtc.org/2809613002/ )

Reason for revert:
Re-land, reverting did not fix bug.

https://bugs.chromium.org/p/webrtc/issues/detail?id=7465

Original issue's description:
> Revert of Implemented the GetSources() in native code. (patchset #11 id:510001 of https://codereview.webrtc.org/2770233003/ )
> 
> Reason for revert:
> Suspected of WebRtcApprtcBrowserTest.MANUAL_WorksOnApprtc breakage, see
> 
> https://bugs.chromium.org/p/webrtc/issues/detail?id=7465
> 
> Original issue's description:
> > Added the GetSources() to the RtpReceiverInterface and implemented
> > it for the AudioRtpReceiver.
> > 
> > This method returns a vector of RtpSource(both CSRC source and SSRC 
> > source) which contains the ID of a source, the timestamp, the source
> > type (SSRC or CSRC) and the audio level.
> > 
> > The RtpSource objects are buffered and maintained by the
> > RtpReceiver in webrtc/modules/rtp_rtcp/. When the method is called,
> > the info of the contributing source will be pulled along the object
> > chain:
> > AudioRtpReceiver -> VoiceChannel -> WebRtcVoiceMediaChannel ->
> > AudioReceiveStream -> voe::Channel -> RtpRtcp module
> > 
> > Spec:https://w3c.github.io/webrtc-pc/archives/20151006/webrtc.html#widl-RTCRtpReceiver-getContributingSources-sequence-RTCRtpContributingSource
> > 
> > BUG=chromium:703122
> > TBR=stefan@webrtc.org, danilchap@webrtc.org
> > 
> > Review-Url: https://codereview.webrtc.org/2770233003
> > Cr-Commit-Position: refs/heads/master@{#17591}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/292084c3765d9f3ee406ca2ec86eae206b540053
> 
> TBR=deadbeef@webrtc.org,solenberg@webrtc.org,hbos@webrtc.org,philipel@webrtc.org,stefan@webrtc.org,danilchap@webrtc.org,zhihuang@webrtc.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=chromium:703122
> 
> Review-Url: https://codereview.webrtc.org/2809613002
> Cr-Commit-Position: refs/heads/master@{#17616}
> Committed: https://chromium.googlesource.com/external/webrtc/+/fbcc5cb3869d1370008e40f24fc03ac8fb69c675

TBR=deadbeef@webrtc.org,solenberg@webrtc.org,philipel@webrtc.org,stefan@webrtc.org,danilchap@webrtc.org,zhihuang@webrtc.org,olka@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:703122
Review-Url: https://codereview.webrtc.org/2810623003
Cr-Commit-Position: refs/heads/master@{#17621}
Committed: https://chromium.googlesource.com/external/webrtc/+/8d609f6b6d46a03a6fb58b1b58d53d481e524062

[hbos, 2017-04-10 14:38:51]

The CQ bit was checked by hbos@webrtc.org

[hbos, 2017-04-10 14:38:51]

Created Reland of Implemented the GetSources() in native code.

[commit-bot: I haz the power, 2017-04-10 14:38:59]

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, 2017-04-10 14:39:05]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491835131042540, "parent_rev":
"b0f7e39fd43a0ce4643ac90c1449d5c0d0f8d55b", "commit_rev":
"8d609f6b6d46a03a6fb58b1b58d53d481e524062"}

[commit-bot: I haz the power, 2017-04-10 14:39:09]

Description was changed from

==========
Reland of Implemented the GetSources() in native code. (patchset #1 id:1 of
https://codereview.webrtc.org/2809613002/ )

Reason for revert:
Re-land, reverting did not fix bug.

https://bugs.chromium.org/p/webrtc/issues/detail?id=7465

Original issue's description:
> Revert of Implemented the GetSources() in native code. (patchset #11 id:510001
of https://codereview.webrtc.org/2770233003/ )
> 
> Reason for revert:
> Suspected of WebRtcApprtcBrowserTest.MANUAL_WorksOnApprtc breakage, see
> 
> https://bugs.chromium.org/p/webrtc/issues/detail?id=7465
> 
> Original issue's description:
> > Added the GetSources() to the RtpReceiverInterface and implemented
> > it for the AudioRtpReceiver.
> > 
> > This method returns a vector of RtpSource(both CSRC source and SSRC 
> > source) which contains the ID of a source, the timestamp, the source
> > type (SSRC or CSRC) and the audio level.
> > 
> > The RtpSource objects are buffered and maintained by the
> > RtpReceiver in webrtc/modules/rtp_rtcp/. When the method is called,
> > the info of the contributing source will be pulled along the object
> > chain:
> > AudioRtpReceiver -> VoiceChannel -> WebRtcVoiceMediaChannel ->
> > AudioReceiveStream -> voe::Channel -> RtpRtcp module
> > 
> >
Spec:https://w3c.github.io/webrtc-pc/archives/20151006/webrtc.html#widl-RTCRtpReceiver-getContributingSources-sequence-RTCRtpContributingSource
> > 
> > BUG=chromium:703122
> > TBR=stefan@webrtc.org, danilchap@webrtc.org
> > 
> > Review-Url: https://codereview.webrtc.org/2770233003
> > Cr-Commit-Position: refs/heads/master@{#17591}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/292084c3765d9f3ee406ca2ec...
> 
>
TBR=deadbeef@webrtc.org,solenberg@webrtc.org,hbos@webrtc.org,philipel@webrtc....
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=chromium:703122
> 
> Review-Url: https://codereview.webrtc.org/2809613002
> Cr-Commit-Position: refs/heads/master@{#17616}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/fbcc5cb3869d1370008e40f24...

TBR=deadbeef@webrtc.org,solenberg@webrtc.org,philipel@webrtc.org,stefan@webrt...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:703122
==========

to

==========
Reland of Implemented the GetSources() in native code. (patchset #1 id:1 of
https://codereview.webrtc.org/2809613002/ )

Reason for revert:
Re-land, reverting did not fix bug.

https://bugs.chromium.org/p/webrtc/issues/detail?id=7465

Original issue's description:
> Revert of Implemented the GetSources() in native code. (patchset #11 id:510001
of https://codereview.webrtc.org/2770233003/ )
> 
> Reason for revert:
> Suspected of WebRtcApprtcBrowserTest.MANUAL_WorksOnApprtc breakage, see
> 
> https://bugs.chromium.org/p/webrtc/issues/detail?id=7465
> 
> Original issue's description:
> > Added the GetSources() to the RtpReceiverInterface and implemented
> > it for the AudioRtpReceiver.
> > 
> > This method returns a vector of RtpSource(both CSRC source and SSRC 
> > source) which contains the ID of a source, the timestamp, the source
> > type (SSRC or CSRC) and the audio level.
> > 
> > The RtpSource objects are buffered and maintained by the
> > RtpReceiver in webrtc/modules/rtp_rtcp/. When the method is called,
> > the info of the contributing source will be pulled along the object
> > chain:
> > AudioRtpReceiver -> VoiceChannel -> WebRtcVoiceMediaChannel ->
> > AudioReceiveStream -> voe::Channel -> RtpRtcp module
> > 
> >
Spec:https://w3c.github.io/webrtc-pc/archives/20151006/webrtc.html#widl-RTCRtpReceiver-getContributingSources-sequence-RTCRtpContributingSource
> > 
> > BUG=chromium:703122
> > TBR=stefan@webrtc.org, danilchap@webrtc.org
> > 
> > Review-Url: https://codereview.webrtc.org/2770233003
> > Cr-Commit-Position: refs/heads/master@{#17591}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/292084c3765d9f3ee406ca2ec...
> 
>
TBR=deadbeef@webrtc.org,solenberg@webrtc.org,hbos@webrtc.org,philipel@webrtc....
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=chromium:703122
> 
> Review-Url: https://codereview.webrtc.org/2809613002
> Cr-Commit-Position: refs/heads/master@{#17616}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/fbcc5cb3869d1370008e40f24...

TBR=deadbeef@webrtc.org,solenberg@webrtc.org,philipel@webrtc.org,stefan@webrt...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:703122

Review-Url: https://codereview.webrtc.org/2810623003
Cr-Commit-Position: refs/heads/master@{#17621}
Committed:
https://chromium.googlesource.com/external/webrtc/+/8d609f6b6d46a03a6fb58b1b5...
==========

[commit-bot: I haz the power, 2017-04-10 14:39:10]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/8d609f6b6d46a03a6fb58b1b5...