Unify VideoCodecType to/from string functionality

webrtc/media/base/codec.h

 /*
  *  Copyright (c) 2004 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 194 matching lines @@
 const Codec* FindCodecById(const std::vector<Codec>& codecs, int payload_type) {
   for (const auto& codec : codecs) {
     if (codec.id == payload_type)
       return &codec;
   }
   return nullptr;
 }
 
 bool CodecNamesEq(const std::string& name1, const std::string& name2);
 bool CodecNamesEq(const char* name1, const char* name2);
-webrtc::VideoCodecType CodecTypeFromName(const std::string& name);
 bool HasNack(const Codec& codec);
 bool HasRemb(const Codec& codec);
 bool HasTransportCc(const Codec& codec);
 // Returns the first codec in |supported_codecs| that matches |codec|, or
 // nullptr if no codec matches.
 const VideoCodec* FindMatchingCodec(
     const std::vector<VideoCodec>& supported_codecs,
     const VideoCodec& codec);
 
 }  // namespace cricket
 
 #endif  // WEBRTC_MEDIA_BASE_CODEC_H_