Adding cbr support for Opus

webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng.cc

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 149 matching lines @@
   vad_->Reset();
   cng_encoder_.reset(
       new ComfortNoiseEncoder(SampleRateHz(), sid_frame_interval_ms_,
                               num_cng_coefficients_));
 }
 
 bool AudioEncoderCng::SetFec(bool enable) {
   return speech_encoder_->SetFec(enable);
 }
 
+bool AudioEncoderCng::SetCbr(bool enable) {
+  return speech_encoder_->SetCbr(enable);
+}
+
 bool AudioEncoderCng::SetDtx(bool enable) {
   return speech_encoder_->SetDtx(enable);
 }
 
 bool AudioEncoderCng::SetApplication(Application application) {
   return speech_encoder_->SetApplication(application);
 }
 
 void AudioEncoderCng::SetMaxPlaybackRate(int frequency_hz) {
   speech_encoder_->SetMaxPlaybackRate(frequency_hz);
@@ skipping 72 matching lines @@
     }
   }
   return info;
 }
 
 size_t AudioEncoderCng::SamplesPer10msFrame() const {
   return rtc::CheckedDivExact(10 * SampleRateHz(), 1000);
 }
 
 }  // namespace webrtc