net: remove UsingTCPFastOpen() method from StreamSocket class

net/socket/websocket_endpoint_lock_manager_unittest.cc

 // Copyright 2014 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 "net/socket/websocket_endpoint_lock_manager.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 31 matching lines @@
 
   int GetLocalAddress(IPEndPoint* address) const override { return ERR_FAILED; }
 
   const BoundNetLog& NetLog() const override { return bound_net_log_; }
 
   void SetSubresourceSpeculation() override { return; }
   void SetOmniboxSpeculation() override { return; }
 
   bool WasEverUsed() const override { return false; }
 
-  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 262 matching lines @@
   blocking_waiter.WaitForLock();
   TimeTicks after_unlock = TimeTicks::Now();
   EXPECT_GE(after_unlock - before_unlock, unlock_delay);
   instance()->SetUnlockDelayForTesting(base::TimeDelta());
   UnlockDummyEndpoint(1);
 }
 
 }  // namespace
 
 }  // namespace net