net: remove UsingTCPFastOpen() method from StreamSocket class

net/http/http_proxy_client_socket_wrapper.cc

 // Copyright 2015 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/http/http_proxy_client_socket_wrapper.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 214 matching lines @@
 }
 
 bool HttpProxyClientSocketWrapper::WasEverUsed() const {
   // TODO(mmenke):  This is a little weird.  Figure out if something else should
   // be done.
   if (transport_socket_)
     return transport_socket_->WasEverUsed();
   return false;
 }
 
-bool HttpProxyClientSocketWrapper::UsingTCPFastOpen() const {
-  if (transport_socket_)
-    return transport_socket_->UsingTCPFastOpen();
-  return false;
-}
-
 bool HttpProxyClientSocketWrapper::WasNpnNegotiated() const {
   if (transport_socket_)
     return transport_socket_->WasNpnNegotiated();
   return false;
 }
 
 NextProto HttpProxyClientSocketWrapper::GetNegotiatedProtocol() const {
   if (transport_socket_)
     return transport_socket_->GetNegotiatedProtocol();
   return kProtoUnknown;
@@ skipping 377 matching lines @@
 const HostResolver::RequestInfo&
 HttpProxyClientSocketWrapper::GetDestination() {
   if (transport_params_) {
     return transport_params_->destination();
   } else {
     return ssl_params_->GetDirectConnectionParams()->destination();
   }
 }
 
 }  // namespace net