Adding cbr support for Opus

webrtc/call/audio_send_stream.cc

Index: webrtc/call/audio_send_stream.cc
diff --git a/webrtc/call/audio_send_stream.cc b/webrtc/call/audio_send_stream.cc
index 6091462470dba0786850e12b889577653706b397..aa731ac9b0f1e16957afdf0b41506f7ae24fdaea 100644
--- a/webrtc/call/audio_send_stream.cc
+++ b/webrtc/call/audio_send_stream.cc
@@ -82,6 +82,7 @@ std::string AudioSendStream::Config::SendCodecSpec::ToString() const {
   ss << ", transport_cc_enabled: " << (transport_cc_enabled ? "true" : "false");
   ss << ", enable_codec_fec: " << (enable_codec_fec ? "true" : "false");
   ss << ", enable_opus_dtx: " << (enable_opus_dtx ? "true" : "false");
+  ss << ", enable_opus_cbr: " << (enable_opus_cbr ? "true" : "false");
   ss << ", opus_max_playback_rate: " << opus_max_playback_rate;
   ss << ", cng_payload_type: " << cng_payload_type;
   ss << ", cng_plfreq: " << cng_plfreq;
@@ -98,6 +99,7 @@ bool AudioSendStream::Config::SendCodecSpec::operator==(
       transport_cc_enabled == rhs.transport_cc_enabled &&
       enable_codec_fec == rhs.enable_codec_fec &&
       enable_opus_dtx == rhs.enable_opus_dtx &&
+      enable_opus_cbr == rhs.enable_opus_cbr &&
       opus_max_playback_rate == rhs.opus_max_playback_rate &&
       cng_payload_type == rhs.cng_payload_type &&
       cng_plfreq == rhs.cng_plfreq && max_ptime_ms == rhs.max_ptime_ms &&