Add send-side BWE to WebRtcVoiceEngine under a finch experiment.

talk/media/base/codec.h

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 217 matching lines @@
   for (const auto& codec : codecs) {
     if (codec.id == payload_type) {
       *codec_out = codec;
       return true;
     }
   }
   return false;
 }
 
 bool CodecNamesEq(const std::string& name1, const std::string& name2);
-bool HasNack(const VideoCodec& codec);
-bool HasRemb(const VideoCodec& codec);
-bool HasTransportCc(const VideoCodec& codec);
+bool HasNack(const Codec& codec);
+bool HasRemb(const Codec& codec);
+bool HasTransportCc(const Codec& codec);
 
 }  // namespace cricket
 
 #endif  // TALK_MEDIA_BASE_CODEC_H_