Remove the support of fallback from DTLS to SDES.

p2p/base/jseptransport.cc

 /*
  *  Copyright 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 312 matching lines @@
   desc << fp_tmp->ToString();
   desc << " Got: " << fingerprint->ToString();
   return BadTransportDescription(desc.str(), error_desc);
 }
 
 bool JsepTransport::ApplyLocalTransportDescription(
     DtlsTransportInternal* dtls_transport,
     std::string* error_desc) {
   dtls_transport->ice_transport()->SetIceParameters(
       local_description_->GetIceParameters());
-  bool ret = true;
-  if (certificate_) {
-    ret = dtls_transport->SetLocalCertificate(certificate_);
-    RTC_DCHECK(ret);
-  }
-  return ret;
+  return true;
 }
 
 bool JsepTransport::ApplyRemoteTransportDescription(
     DtlsTransportInternal* dtls_transport,
     std::string* error_desc) {
   dtls_transport->ice_transport()->SetRemoteIceParameters(
       remote_description_->GetIceParameters());
   dtls_transport->ice_transport()->SetRemoteIceMode(
       remote_description_->ice_mode);
   return true;
@@ skipping 144 matching lines @@
     }
 
     // If local is passive, local will act as server.
   }
 
   ssl_role_.emplace(is_remote_server ? rtc::SSL_CLIENT : rtc::SSL_SERVER);
   return true;
 }
 
 }  // namespace cricket