NetEq: Ask AudioDecoder for sample rate instead of passing it as an argument

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 224 matching lines @@
     }
 
     decoders_.erase(it);
   }
 
   int ret_val;
   if (!audio_decoder) {
     ret_val = neteq_->RegisterPayloadType(neteq_decoder, name, payload_type);
   } else {
     ret_val = neteq_->RegisterExternalDecoder(
-        audio_decoder, neteq_decoder, name, payload_type, sample_rate_hz);
+        audio_decoder, neteq_decoder, name, payload_type);
   }
   if (ret_val != NetEq::kOK) {
     LOG(LERROR) << "AcmReceiver::AddCodec " << acm_codec_id
                 << static_cast<int>(payload_type)
                 << " channels: " << channels;
     return -1;
   }
 
   Decoder decoder;
   decoder.acm_codec_id = acm_codec_id;
@@ skipping 155 matching lines @@
 
 void AcmReceiver::GetDecodingCallStatistics(
     AudioDecodingCallStats* stats) const {
   rtc::CritScope lock(&crit_sect_);
   *stats = call_stats_.GetDecodingStatistics();
 }
 
 }  // namespace acm2
 
 }  // namespace webrtc