net: remove UsingTCPFastOpen() method from StreamSocket class

remoting/protocol/ssl_hmac_channel_authenticator.cc

 // Copyright (c) 2012 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/protocol/ssl_hmac_channel_authenticator.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 96 matching lines @@
     NOTREACHED();
     return net::ERR_FAILED;
   }
   const net::BoundNetLog& NetLog() const override { return net_log_; }
   void SetSubresourceSpeculation() override { NOTREACHED(); }
   void SetOmniboxSpeculation() override { NOTREACHED(); }
   bool WasEverUsed() const override {
     NOTREACHED();
     return true;
   }
-  bool UsingTCPFastOpen() const override {
-    NOTREACHED();
-    return false;
-  }
   void EnableTCPFastOpenIfSupported() override { NOTREACHED(); }
   bool WasNpnNegotiated() const override {
     NOTREACHED();
     return false;
   }
   net::NextProto GetNegotiatedProtocol() const override {
     NOTREACHED();
     return net::kProtoUnknown;
   }
   bool GetSSLInfo(net::SSLInfo* ssl_info) override {
@@ skipping 311 matching lines @@
                           std::move(socket_), std::move(server_context_))));
   }
 }
 
 void SslHmacChannelAuthenticator::NotifyError(int error) {
   base::ResetAndReturn(&done_callback_).Run(error, nullptr);
 }
 
 }  // namespace protocol
 }  // namespace remoting