Change QuicStreamRequest::Request() to take a preferred QuicVersion so that

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 172 matching lines @@
           context.channel_id_service,
           context.transport_security_state,
           context.cert_transparency_verifier,
           context.socket_performance_watcher_factory,
           context.quic_crypto_client_stream_factory,
           context.quic_random ? context.quic_random : QuicRandom::GetInstance(),
           context.quic_clock ? context.quic_clock
                              : QuicChromiumClock::GetInstance(),
           params.quic_max_packet_length,
           params.quic_user_agent_id,
-          params.quic_supported_versions,
           params.quic_max_server_configs_stored_in_properties > 0,
           params.quic_close_sessions_on_ip_change,
           params.mark_quic_broken_when_network_blackholes,
           params.quic_idle_connection_timeout_seconds,
           params.quic_reduced_ping_timeout_seconds,
           params.quic_packet_reader_yield_after_duration_milliseconds,
           params.quic_migrate_sessions_on_network_change,
           params.quic_migrate_sessions_early,
           params.quic_allow_server_migration,
           params.quic_force_hol_blocking,
@@ skipping 278 matching lines @@
       CloseIdleConnections();
       break;
   }
 }
 
 void HttpNetworkSession::OnPurgeMemory() {
   CloseIdleConnections();
 }
 
 }  // namespace net