Reland of TCRtpReceiver.getContributingSources() added.

content/renderer/media/webrtc/rtc_rtp_receiver.cc

 // Copyright (c) 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/webrtc/rtc_rtp_receiver.h"
 
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
+#include "content/renderer/media/webrtc/rtc_rtp_contributing_source.h"
 #include "third_party/webrtc/base/scoped_ref_ptr.h"
 
 namespace content {
 
 namespace {
 
 inline bool operator==(const blink::WebMediaStreamTrack& web_track,
                        const webrtc::MediaStreamTrackInterface& webrtc_track) {
   return !web_track.IsNull() && web_track.Id() == webrtc_track.id().c_str();
 }
@@ skipping 18 matching lines @@
 
 uintptr_t RTCRtpReceiver::Id() const {
   return getId(webrtc_rtp_receiver_.get());
 }
 
 const blink::WebMediaStreamTrack& RTCRtpReceiver::Track() const {
   DCHECK(web_track_ == webrtc_track());
   return web_track_;
 }
 
+blink::WebVector<std::unique_ptr<blink::WebRTCRtpContributingSource>>
+RTCRtpReceiver::GetSources() {
+  auto webrtc_sources = webrtc_rtp_receiver_->GetSources();
+  blink::WebVector<std::unique_ptr<blink::WebRTCRtpContributingSource>> sources(
+      webrtc_sources.size());
+  for (size_t i = 0; i < webrtc_sources.size(); ++i) {
+    sources[i] = base::MakeUnique<RTCRtpContributingSource>(webrtc_sources[i]);
+  }
+  return sources;
+}
+
 const webrtc::MediaStreamTrackInterface& RTCRtpReceiver::webrtc_track() const {
   const webrtc::MediaStreamTrackInterface* webrtc_track =
       webrtc_rtp_receiver_->track();
   DCHECK(webrtc_track);
   DCHECK(web_track_ == *webrtc_track);
   return *webrtc_track;
 }
 
 }  // namespace content