Change return type of AudioEncoder::SetMaxPlaybackRate to void

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 168 matching lines @@
 }
 
 bool AudioEncoderCng::SetDtx(bool enable) {
   return speech_encoder_->SetDtx(enable);
 }
 
 bool AudioEncoderCng::SetApplication(Application application) {
   return speech_encoder_->SetApplication(application);
 }
 
-bool AudioEncoderCng::SetMaxPlaybackRate(int frequency_hz) {
-  return speech_encoder_->SetMaxPlaybackRate(frequency_hz);
+void AudioEncoderCng::SetMaxPlaybackRate(int frequency_hz) {
+  speech_encoder_->SetMaxPlaybackRate(frequency_hz);
 }
 
 void AudioEncoderCng::SetProjectedPacketLossRate(double fraction) {
   speech_encoder_->SetProjectedPacketLossRate(fraction);
 }
 
 void AudioEncoderCng::SetTargetBitrate(int bits_per_second) {
   speech_encoder_->SetTargetBitrate(bits_per_second);
 }
 
@@ skipping 55 matching lines @@
     }
   }
   return info;
 }
 
 size_t AudioEncoderCng::SamplesPer10msFrame() const {
   return rtc::CheckedDivExact(10 * SampleRateHz(), 1000);
 }
 
 }  // namespace webrtc