net: remove UsingTCPFastOpen() method from StreamSocket class

net/server/http_server_unittest.cc

 // Copyright 2013 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 <stdint.h>
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 479 matching lines @@
   int GetPeerAddress(IPEndPoint* address) const override {
     return ERR_NOT_IMPLEMENTED;
   }
   int GetLocalAddress(IPEndPoint* address) const override {
     return ERR_NOT_IMPLEMENTED;
   }
   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();
   }
   void ClearConnectionAttempts() override {}
   void AddConnectionAttempts(const ConnectionAttempts& attempts) override {}
   int64_t GetTotalReceivedBytes() const override {
     NOTIMPLEMENTED();
@@ skipping 137 matching lines @@
   ASSERT_EQ(OK, client.ConnectAndWait(server_address_));
   client.Send("GET / HTTP/1.1\r\n\r\n");
   ASSERT_FALSE(RunUntilRequestsReceived(1));
   ASSERT_EQ(1ul, connection_ids_.size());
   ASSERT_EQ(0ul, requests_.size());
 }
 
 }  // namespace
 
 }  // namespace net