| Index: webrtc/voice_engine/channel_proxy.cc
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| diff --git a/webrtc/voice_engine/channel_proxy.cc b/webrtc/voice_engine/channel_proxy.cc
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| index de982977ca54c103a0d136911f1b4cfd1e83b0ce..d537032f3d373fcad423761defeab82aaac5d472 100644
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| --- a/webrtc/voice_engine/channel_proxy.cc
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| +++ b/webrtc/voice_engine/channel_proxy.cc
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| @@ -391,6 +391,12 @@ void ChannelProxy::RegisterLegacyReceiveCodecs() {
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|    channel()->RegisterLegacyReceiveCodecs();
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|  }
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|  
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| +const std::vector<RtpContributingSource>&
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| +ChannelProxy::GetContributingSources() {
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| +  RTC_DCHECK(worker_thread_checker_.CalledOnValidThread());
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| +  return channel()->GetContributingSources();
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| +}
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| +
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|  Channel* ChannelProxy::channel() const {
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|    RTC_DCHECK(channel_owner_.channel());
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|    return channel_owner_.channel();
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| 
 |