Removing `preference` field from `cricket::Codec`.

webrtc/media/sctp/sctpdataengine.cc

 /*
  *  Copyright (c) 2012 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 265 matching lines @@
     // Set the number of default outgoing streams.  This is the number we'll
     // send in the SCTP INIT message.  The 'appropriate default' in the
     // second paragraph of
     // http://tools.ietf.org/html/draft-ietf-rtcweb-data-channel-05#section-6.2
     // is cricket::kMaxSctpSid.
     usrsctp_sysctl_set_sctp_nr_outgoing_streams_default(
         cricket::kMaxSctpSid);
   }
   usrsctp_engines_count++;
 
-  cricket::DataCodec codec(kGoogleSctpDataCodecId, kGoogleSctpDataCodecName, 0);
+  cricket::DataCodec codec(kGoogleSctpDataCodecId, kGoogleSctpDataCodecName);
   codec.SetParam(kCodecParamPort, kSctpDefaultPort);
   codecs_.push_back(codec);
 }
 
 SctpDataEngine::~SctpDataEngine() {
   usrsctp_engines_count--;
   LOG(LS_VERBOSE) << "usrsctp_engines_count:" << usrsctp_engines_count;
 
   if (usrsctp_engines_count == 0) {
     // usrsctp_finish() may fail if it's called too soon after the channels are
@@ skipping 736 matching lines @@
     }
     case MSG_SCTPOUTBOUNDPACKET: {
       std::unique_ptr<OutboundPacketMessage> pdata(
           static_cast<OutboundPacketMessage*>(msg->pdata));
       OnPacketFromSctpToNetwork(pdata->data().get());
       break;
     }
   }
 }
 }  // namespace cricket