Remove unused "Disable remote Alt-Svc" QUIC experiment code.

net/http/http_network_session.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.
 
 #include "net/http/http_network_session.h"
 
 #include <inttypes.h>
 
 #include <utility>
 
@@ skipping 102 matching lines @@
       socket_performance_watcher_factory(nullptr),
       ignore_certificate_errors(false),
       testing_fixed_http_port(0),
       testing_fixed_https_port(0),
       enable_tcp_fast_open_for_ssl(false),
       enable_spdy_ping_based_connection_checking(true),
       enable_http2(true),
       spdy_session_max_recv_window_size(kSpdySessionMaxRecvWindowSize),
       time_func(&base::TimeTicks::Now),
       enable_http2_alternative_service(false),
-      enable_quic_alternative_service_with_different_host(true),
       enable_quic(false),
       mark_quic_broken_when_network_blackholes(false),
       retry_without_alt_svc_on_quic_errors(false),
       quic_load_server_info_timeout_srtt_multiplier(0.25f),
       quic_enable_connection_racing(false),
       quic_enable_non_blocking_io(false),
       quic_disable_disk_cache(false),
       quic_delay_tcp_race(true),
       quic_max_server_configs_stored_in_properties(0u),
       quic_clock(nullptr),
@@ skipping 335 matching lines @@
       CloseIdleConnections();
       break;
   }
 }
 
 void HttpNetworkSession::OnPurgeMemory() {
   CloseIdleConnections();
 }
 
 }  // namespace net