Add a new enable_nonblocking_io field trial param for QUIC

net/quic/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_QUIC_STREAM_FACTORY_H_
 #define NET_QUIC_QUIC_STREAM_FACTORY_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 91 matching lines @@
       size_t max_packet_length,
       const std::string& user_agent_id,
       const QuicVersionVector& supported_versions,
       bool enable_port_selection,
       bool always_require_handshake_confirmation,
       bool disable_connection_pooling,
       int load_server_info_timeout,
       float load_server_info_timeout_srtt_multiplier,
       bool enable_truncated_connection_ids,
       bool enable_connection_racing,
+      bool enable_nonblocking_io,
       bool disable_disk_cache,
       const QuicTagVector& connection_options);
   ~QuicStreamFactory() override;
 
   // Creates a new QuicHttpStream to |host_port_pair| which will be
   // owned by |request|. |is_https| specifies if the protocol is https or not.
   // If a matching session already exists, this method will return OK.  If no
   // matching session exists, this will return ERR_IO_PENDING and will invoke
   // OnRequestComplete asynchronously.
   int Create(const HostPortPair& host_port_pair,
@@ skipping 200 matching lines @@
   float load_server_info_timeout_srtt_multiplier_;
 
   // Set this for setting config's BytesForConnectionIdToSend (TCID param) to 0.
   bool enable_truncated_connection_ids_;
 
   // Set if we want to race connections - one connection that sends
   // INCHOATE_HELLO and another connection that sends CHLO after loading server
   // config from the disk cache.
   bool enable_connection_racing_;
 
+  // Set if experimental non-blocking IO should be used on windows sockets.
+  bool enable_nonblocking_io_;
+
   // Set if we do not want to load server config from the disk cache.
   bool disable_disk_cache_;
 
   // Each profile will (probably) have a unique port_seed_ value.  This value is
   // used to help seed a pseudo-random number generator (PortSuggester) so that
   // we consistently (within this profile) suggest the same ephemeral port when
   // we re-connect to any given server/port.  The differences between profiles
   // (probablistically) prevent two profiles from colliding in their ephemeral
   // port requests.
   uint64 port_seed_;
 
   // Local address of socket that was created in CreateSession.
   IPEndPoint local_address_;
   bool check_persisted_supports_quic_;
   std::set<HostPortPair> quic_supported_servers_at_startup_;
 
   NetworkConnection network_connection_;
 
   base::TaskRunner* task_runner_;
 
   base::WeakPtrFactory<QuicStreamFactory> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicStreamFactory);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_STREAM_FACTORY_H_