Implement operator<< for AudioCodecInfo and AudioCodecSpec

webrtc/api/audio_codecs/audio_format.h

 /*
  *  Copyright (c) 2016 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 102 matching lines @@
   int default_bitrate_bps;
   int min_bitrate_bps;
   int max_bitrate_bps;
 
   bool allow_comfort_noise = true;  // This codec can be used with an external
                                     // comfort noise generator.
   bool supports_network_adaption = false;  // This codec can adapt to varying
                                            // network conditions.
 };
 
+std::ostream& operator<<(std::ostream& os, const AudioCodecInfo& aci);
+
 // AudioCodecSpec ties an audio format to specific information about the codec
 // and its implementation.
 struct AudioCodecSpec {
   bool operator==(const AudioCodecSpec& b) const {
     return format == b.format && info == b.info;
   }
 
   bool operator!=(const AudioCodecSpec& b) const { return !(*this == b); }
 
   SdpAudioFormat format;
   AudioCodecInfo info;
 };
 
+std::ostream& operator<<(std::ostream& os, const AudioCodecSpec& acs);
+
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_AUDIO_CODECS_AUDIO_FORMAT_H_