[Cronet] Initialize disable_quic_bidirectional_streams and QUIC protocol

net/url_request/url_request_context_builder.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/url_request/url_request_context_builder.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 173 matching lines @@
       enable_alternative_service_with_different_host(false),
       enable_quic(false),
       quic_max_server_configs_stored_in_properties(0),
       quic_delay_tcp_race(false),
       quic_max_number_of_lossy_connections(0),
       quic_prefer_aes(false),
       quic_packet_loss_threshold(1.0f),
       quic_idle_connection_timeout_seconds(kIdleConnectionTimeoutSeconds),
       quic_close_sessions_on_ip_change(false),
       quic_migrate_sessions_on_network_change(false),
-      quic_migrate_sessions_early(false) {}
+      quic_migrate_sessions_early(false),
+      quic_disable_bidirectional_streams(false) {}

[mef, 2016/03/28 19:22:42]

I think we should also initialize proxy_delegate and enable_token_binding while
we are here.

[xunjieli, 2016/03/28 19:57:19]

Maybe I am missing something, but these two aren't part of
HttpNetworkSessionParams struct.

[mef, 2016/03/28 20:17:32]

Oops, I was looking at HttpNetworkSession::Params. 

 
 URLRequestContextBuilder::HttpNetworkSessionParams::~HttpNetworkSessionParams()
 {}
 
 URLRequestContextBuilder::URLRequestContextBuilder()
     : data_enabled_(false),
 #if !defined(DISABLE_FILE_SUPPORT)
       file_enabled_(false),
 #endif
 #if !defined(DISABLE_FTP_SUPPORT)
@@ skipping 302 matching lines @@
     }
     url_request_interceptors_.clear();
   }
   storage->set_job_factory(std::move(top_job_factory));
   // TODO(willchan): Support sdch.
 
   return std::move(context);
 }
 
 }  // namespace net