Revert of Pick the DTLS handshake timeout based on the ICE RTT estimate

webrtc/p2p/base/fakeicetransport.h

 /*
  *  Copyright 2017 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 133 matching lines @@
   }
   void RemoveRemoteCandidate(const Candidate& candidate) override {}
 
   bool GetStats(ConnectionInfos* infos) override {
     ConnectionInfo info;
     infos->clear();
     infos->push_back(info);
     return true;
   }
 
-  rtc::Optional<int> GetRttEstimate() override {
-    return rtc::Optional<int>();
-  }
-
   void SetMetricsObserver(webrtc::MetricsObserverInterface* observer) override {
   }
 
   // Fake PacketTransportInterface implementation.
   bool writable() const override { return writable_; }
   bool receiving() const override { return receiving_; }
   int SendPacket(const char* data,
                  size_t len,
                  const rtc::PacketOptions& options,
                  int flags) override {
@@ skipping 63 matching lines @@
   size_t connection_count_ = 0;
   IceGatheringState gathering_state_ = kIceGatheringNew;
   bool had_connection_ = false;
   bool writable_ = false;
   bool receiving_ = false;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_FAKEICETRANSPORT_H_