Update smoothed bitrate.

webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.cc

Index: webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.cc
diff --git a/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.cc b/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.cc
index 51b706490b020eefbbc43d455118c5170fef9ec7..3faad68db48ffd84394df8e0274fd463b78e7cef 100644
--- a/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.cc
+++ b/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.cc
@@ -126,9 +126,11 @@ void AudioEncoderCopyRed::OnReceivedUplinkPacketLossFraction(
       uplink_packet_loss_fraction);
 }
 
-void AudioEncoderCopyRed::OnReceivedTargetAudioBitrate(
-    int target_audio_bitrate_bps) {
-  speech_encoder_->OnReceivedTargetAudioBitrate(target_audio_bitrate_bps);
+void AudioEncoderCopyRed::OnReceivedUplinkBandwidth(
+    int target_audio_bitrate_bps,
+    rtc::Optional<int64_t> probing_interval_ms) {
+  speech_encoder_->OnReceivedUplinkBandwidth(target_audio_bitrate_bps,
+                                             probing_interval_ms);
 }
 
 }  // namespace webrtc