Adding cbr support for Opus

webrtc/audio/audio_send_stream.cc

Index: webrtc/audio/audio_send_stream.cc
diff --git a/webrtc/audio/audio_send_stream.cc b/webrtc/audio/audio_send_stream.cc
index 438d1cc78a5aca5d7657b6368bfbac03fa5aed8e..b713542824906650650061f315f02e0cf45ddb7d 100644
--- a/webrtc/audio/audio_send_stream.cc
+++ b/webrtc/audio/audio_send_stream.cc
@@ -303,13 +303,18 @@ bool AudioSendStream::SetupSendCodec() {
     }
   }
 
-  // DTX and maxplaybackrate are only set if current codec is Opus.
+  // DTX, CBR, and maxplaybackrate are only set if current codec is Opus.
   if (IsCodec(send_codec_spec.codec_inst, kOpusCodecName)) {
     if (!channel_proxy_->SetOpusDtx(send_codec_spec.enable_opus_dtx)) {
       LOG(LS_WARNING) << "SetOpusDtx() failed.";
       return false;
     }
 
+    if (!channel_proxy_->SetOpusCbr(send_codec_spec.enable_opus_cbr)) {
+      LOG(LS_WARNING) << "SetOpusCbr() failed.";
+      return false;
+    }
+
     // If opus_max_playback_rate <= 0, the default maximum playback rate
     // (48 kHz) will be used.
     if (send_codec_spec.opus_max_playback_rate > 0) {