Attach TransportFeedbackPacketLossTracker to ANA (PLR only)

webrtc/voice_engine/channel_proxy.cc

Index: webrtc/voice_engine/channel_proxy.cc
diff --git a/webrtc/voice_engine/channel_proxy.cc b/webrtc/voice_engine/channel_proxy.cc
index 7f6e96c97c331dd787649ad2749089fa8edf55e1..bdfa383bffb994791826bc28b45c8e8bd19cd93a 100644
--- a/webrtc/voice_engine/channel_proxy.cc
+++ b/webrtc/voice_engine/channel_proxy.cc
@@ -367,6 +367,11 @@ bool ChannelProxy::SetSendCNPayloadType(int type,
   return channel()->SetSendCNPayloadType(type, frequency) == 0;
 }
 
+void ChannelProxy::OnTwccBasedUplinkPacketLossRate(
+    const rtc::Optional<float>& packet_loss_rate) {
+  channel()->OnTwccBasedUplinkPacketLossRate(packet_loss_rate);
+}
+
 Channel* ChannelProxy::channel() const {
   RTC_DCHECK(channel_owner_.channel());
   return channel_owner_.channel();