net: remove UsingTCPFastOpen() method from StreamSocket class

net/socket/ssl_server_socket_unittest.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.
 
 // This test suite uses SSLClientSocket to test the implementation of
 // SSLServerSocket. In order to establish connections between the sockets
 // we need two additional classes:
 // 1. FakeSocket
 //    Connects SSL socket to FakeDataChannel. This class is just a stub.
 //
@@ skipping 239 matching lines @@
     return OK;
   }
 
   const BoundNetLog& NetLog() const override { return net_log_; }
 
   void SetSubresourceSpeculation() override {}
   void SetOmniboxSpeculation() override {}
 
   bool WasEverUsed() const override { return true; }
 
-  bool UsingTCPFastOpen() const override { return false; }
-
   bool WasNpnNegotiated() const override { return false; }
 
   NextProto GetNegotiatedProtocol() const override { return kProtoUnknown; }
 
   bool GetSSLInfo(SSLInfo* ssl_info) override { return false; }
 
   void GetConnectionAttempts(ConnectionAttempts* out) const override {
     out->clear();
   }
 
@@ skipping 801 matching lines @@
   int server_ret = server_socket_->Handshake(handshake_callback.callback());
 
   client_ret = connect_callback.GetResult(client_ret);
   server_ret = handshake_callback.GetResult(server_ret);
 
   ASSERT_EQ(ERR_SSL_VERSION_OR_CIPHER_MISMATCH, client_ret);
   ASSERT_EQ(ERR_SSL_VERSION_OR_CIPHER_MISMATCH, server_ret);
 }
 
 }  // namespace net