Remove the unused "Disable non-blocking IO" QUIC experiment code.

net/quic/chromium/quic_stream_factory.h

 // 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.
 
 #ifndef NET_QUIC_CHROMIUM_QUIC_STREAM_FACTORY_H_
 #define NET_QUIC_CHROMIUM_QUIC_STREAM_FACTORY_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 189 matching lines @@
       ChannelIDService* channel_id_service,
       TransportSecurityState* transport_security_state,
       CTVerifier* cert_transparency_verifier,
       SocketPerformanceWatcherFactory* socket_performance_watcher_factory,
       QuicCryptoClientStreamFactory* quic_crypto_client_stream_factory,
       QuicRandom* random_generator,
       QuicClock* clock,
       size_t max_packet_length,
       const std::string& user_agent_id,
       const QuicVersionVector& supported_versions,
-      bool enable_non_blocking_io,
       bool store_server_configs_in_properties,
       bool close_sessions_on_ip_change,
       bool mark_quic_broken_when_network_blackholes,
       int idle_connection_timeout_seconds,
       int reduced_ping_timeout_seconds,
       int packet_reader_yield_after_duration_milliseconds,
       bool migrate_sessions_on_network_change,
       bool migrate_sessions_early,
       bool allow_server_migration,
       bool force_hol_blocking,
@@ skipping 297 matching lines @@
 
   JobMap active_jobs_;
   // Map from QuicServerId to a set of non-owning QuicStreamRequest pointers.
   ServerIDRequestsMap job_requests_map_;
 
   // Map of QuicServerId to owning CertVerifierJob.
   CertVerifierJobMap active_cert_verifier_jobs_;
 
   const QuicVersionVector supported_versions_;
 
-  // Set if experimental non-blocking IO should be used on windows sockets.
-  bool enable_non_blocking_io_;
-
   // True if QUIC should be marked as broken when a connection blackholes after
   // the handshake is confirmed.
   bool mark_quic_broken_when_network_blackholes_;
 
   // Set if QUIC server configs should be stored in HttpServerProperties.
   bool store_server_configs_in_properties_;
 
   // PING timeout for connections.
   QuicTime::Delta ping_timeout_;
   QuicTime::Delta reduced_ping_timeout_;
@@ skipping 46 matching lines @@
   const scoped_refptr<SSLConfigService> ssl_config_service_;
 
   base::WeakPtrFactory<QuicStreamFactory> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicStreamFactory);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CHROMIUM_QUIC_STREAM_FACTORY_H_