Add a finch trial param to disable QUIC when connection times out with open streams

chrome/browser/io_thread.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 CHROME_BROWSER_IO_THREAD_H_
 #define CHROME_BROWSER_IO_THREAD_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 201 matching lines @@
     Optional<std::string> trusted_spdy_proxy;
     std::set<net::HostPortPair> forced_spdy_exclusions;
     Optional<bool> use_alternative_services;
     Optional<double> alternative_service_probability_threshold;
 
     Optional<bool> enable_npn;
 
     Optional<bool> enable_brotli;
 
     Optional<bool> enable_quic;
+    Optional<bool> disable_quic_on_timeout_with_open_streams;
     Optional<bool> enable_quic_for_proxies;
     Optional<bool> enable_quic_port_selection;
     Optional<bool> quic_always_require_handshake_confirmation;
     Optional<bool> quic_disable_connection_pooling;
     Optional<float> quic_load_server_info_timeout_srtt_multiplier;
     Optional<bool> quic_enable_connection_racing;
     Optional<bool> quic_enable_non_blocking_io;
     Optional<bool> quic_disable_disk_cache;
     Optional<bool> quic_prefer_aes;
     Optional<int> quic_max_number_of_lossy_connections;
@@ skipping 132 matching lines @@
   // Configures QUIC options in |globals| based on the flags in |command_line|
   // as well as the QUIC field trial group and parameters.  Must be called
   // before ConfigureSpdyGlobals.
   static void ConfigureQuicGlobals(
       const base::CommandLine& command_line,
       base::StringPiece quic_trial_group,
       const VariationParameters& quic_trial_params,
       bool quic_allowed_by_policy,
       Globals* globals);
 
+  // Returns true if QUIC should be disabled when a connection times out with
+  // open streams.
+  static bool ShouldDisableQuicWhenConnectionTimesOutWithOpenStreams(
+      const VariationParameters& quic_trial_params);
+
   // Returns true if QUIC should be enabled, either as a result
   // of a field trial or a command line flag.
   static bool ShouldEnableQuic(
       const base::CommandLine& command_line,
       base::StringPiece quic_trial_group,
       bool quic_allowed_by_policy);
 
   // Returns true if QUIC should be enabled for proxies, either as a result
   // of a field trial or a command line flag.
   static bool ShouldEnableQuicForProxies(
@@ skipping 199 matching lines @@
   bool is_quic_allowed_by_policy_;
 
   const base::TimeTicks creation_time_;
 
   base::WeakPtrFactory<IOThread> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IOThread);
 };
 
 #endif  // CHROME_BROWSER_IO_THREAD_H_