net: remove UsingTCPFastOpen() method from StreamSocket class

net/spdy/spdy_test_util_common.cc

 // Copyright (c) 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 "net/spdy/spdy_test_util_common.h"
 
 #include <stdint.h>
 #include <cstddef>
 #include <utility>
 
@@ skipping 587 matching lines @@
   int Connect(const CompletionCallback& callback) override {
     ADD_FAILURE();
     return ERR_UNEXPECTED;
   }
 
   bool WasEverUsed() const override {
     ADD_FAILURE();
     return false;
   }
 
-  bool UsingTCPFastOpen() const override {
-    ADD_FAILURE();
-    return false;
-  }
-
   bool WasNpnNegotiated() const override {
     ADD_FAILURE();
     return false;
   }
 
   bool GetSSLInfo(SSLInfo* ssl_info) override {
     ADD_FAILURE();
     return false;
   }
 
@@ skipping 645 matching lines @@
   }
 }
 
 void SpdyTestUtil::SetPriority(RequestPriority priority,
                                SpdySynStreamIR* ir) const {
   ir->set_priority(ConvertRequestPriorityToSpdyPriority(
       priority, spdy_version()));
 }
 
 }  // namespace net