Pass SdpAudioFormat through Channel, without converting to CodecInst

webrtc/audio/audio_receive_stream.cc

Index: webrtc/audio/audio_receive_stream.cc
diff --git a/webrtc/audio/audio_receive_stream.cc b/webrtc/audio/audio_receive_stream.cc
index 8da0616f1d3eb4f531361daf0e16ab5e7faebec9..08cc59e7a036c2c51c2dde95d9a9f25583cc83f9 100644
--- a/webrtc/audio/audio_receive_stream.cc
+++ b/webrtc/audio/audio_receive_stream.cc
@@ -101,6 +101,10 @@ AudioReceiveStream::AudioReceiveStream(
 
   channel_proxy_->RegisterExternalTransport(config.rtcp_send_transport);
 
+  for (const auto& kv : config.decoder_map) {
+    channel_proxy_->SetRecPayloadType(kv.first, kv.second);
+  }
+
   for (const auto& extension : config.rtp.extensions) {
     if (extension.uri == RtpExtension::kAudioLevelUri) {
       channel_proxy_->SetReceiveAudioLevelIndicationStatus(true, extension.id);