Stopped using the NetEqDecoder enum internally in NetEq.

webrtc/modules/audio_coding/acm2/acm_receiver.cc

 /*
  *  Copyright (c) 2013 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 184 matching lines @@
     const rtc::Optional<NetEqDecoder> ned =
         RentACodec::NetEqDecoderFromCodecId(*cid, channels);
     RTC_DCHECK(ned) << "Invalid codec ID: " << static_cast<int>(*cid);
     return *ned;
   }();
   const rtc::Optional<SdpAudioFormat> new_format =
       RentACodec::NetEqDecoderToSdpAudioFormat(neteq_decoder);
 
   rtc::CritScope lock(&crit_sect_);
 
-  const SdpAudioFormat* const old_format =
-      neteq_->GetDecoderFormat(payload_type);
+  const auto old_format = neteq_->GetDecoderFormat(payload_type);
   if (old_format && new_format && *old_format == *new_format) {
     // Re-registering the same codec. Do nothing and return.
     return 0;
   }
 
   if (neteq_->RemovePayloadType(payload_type) != NetEq::kOK &&
       neteq_->LastError() != NetEq::kDecoderNotFound) {
     LOG(LERROR) << "Cannot remove payload " << static_cast<int>(payload_type);
     return -1;
   }
@@ skipping 138 matching lines @@
 
 void AcmReceiver::GetDecodingCallStatistics(
     AudioDecodingCallStats* stats) const {
   rtc::CritScope lock(&crit_sect_);
   *stats = call_stats_.GetDecodingStatistics();
 }
 
 }  // namespace acm2
 
 }  // namespace webrtc