Stop calling deprecated version of "CreateIceCandidate".

remoting/host/cast_extension_session.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/host/cast_extension_session.h"
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
@@ skipping 371 matching lines @@
   std::string sdp_mid;
   int sdp_mlineindex = 0;
   if (!message_data->GetString(kWebRtcSDPMid, &sdp_mid) ||
       !message_data->GetInteger(kWebRtcSDPMLineIndex, &sdp_mlineindex) ||
       !message_data->GetString(kWebRtcCandidate, &candidate_str)) {
     LOG(ERROR) << "Invalid Cast Extension Message (could not parse).";
     return false;
   }
 
   rtc::scoped_ptr<webrtc::IceCandidateInterface> candidate(
-      webrtc::CreateIceCandidate(sdp_mid, sdp_mlineindex, candidate_str));
+      webrtc::CreateIceCandidate(sdp_mid, sdp_mlineindex, candidate_str,
+                                 nullptr));
   if (!candidate.get()) {
     LOG(ERROR)
         << "Invalid Cast Extension Message (could not create candidate).";
     return false;
   }
 
   if (!peer_connection_->AddIceCandidate(candidate.get())) {
     LOG(ERROR) << "Failed to apply received ICE Candidate to PeerConnection.";
     return false;
   }
@@ skipping 250 matching lines @@
   json.SetString(kWebRtcCandidate, candidate_str);
   std::string json_str;
   if (!base::JSONWriter::Write(json, &json_str)) {
     LOG(ERROR) << "Failed to serialize candidate message.";
     return;
   }
   SendMessageToClient(kSubjectNewCandidate, json_str);
 }
 
 }  // namespace remoting