Do not mark QUIC as bad on network change events

components/network_session_configurator/network_session_configurator.cc

 // Copyright 2016 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 "components/network_session_configurator/network_session_configurator.h"
 
 #include <map>
 #include <unordered_set>
 
 #include "base/metrics/field_trial.h"
@@ skipping 201 matching lines @@
 }
 
 bool ShouldQuicAllowServerMigration(
     const VariationParameters& quic_trial_params) {
   return base::LowerCaseEqualsASCII(
       GetVariationParam(quic_trial_params,
                         "allow_server_migration"),
       "true");
 }
 
-bool ShouldQuicDoNotMarkAsBrokenOnNetworkChange(
-    const VariationParameters& quic_trial_params) {
-  return base::LowerCaseEqualsASCII(
-      GetVariationParam(quic_trial_params,
-                        "do_not_mark_as_broken_on_network_change"),
-      "true");
-}
-
 size_t GetQuicMaxPacketLength(const VariationParameters& quic_trial_params) {
   unsigned value;
   if (base::StringToUint(
           GetVariationParam(quic_trial_params, "max_packet_length"), &value)) {
     return value;
   }
   return 0;
 }
 
 net::QuicVersion GetQuicVersion(const VariationParameters& quic_trial_params) {
@@ skipping 55 matching lines @@
     params->quic_do_not_fragment =
         ShouldQuicDoNotFragment(quic_trial_params);
     params->quic_estimate_initial_rtt =
         ShouldQuicEstimateInitialRtt(quic_trial_params);
     params->quic_migrate_sessions_on_network_change =
         ShouldQuicMigrateSessionsOnNetworkChange(quic_trial_params);
     params->quic_migrate_sessions_early =
         ShouldQuicMigrateSessionsEarly(quic_trial_params);
     params->quic_allow_server_migration =
         ShouldQuicAllowServerMigration(quic_trial_params);
-    params->quic_do_not_mark_as_broken_on_network_change =
-        ShouldQuicDoNotMarkAsBrokenOnNetworkChange(quic_trial_params);
   }
 
   size_t max_packet_length = GetQuicMaxPacketLength(quic_trial_params);
   if (max_packet_length != 0) {
     params->quic_max_packet_length = max_packet_length;
   }
 
   params->quic_user_agent_id = quic_user_agent_id;
 
   net::QuicVersion version = GetQuicVersion(quic_trial_params);
@@ skipping 40 matching lines @@
                                       &http2_trial_params))
     http2_trial_params.clear();
   ConfigureHttp2Params(http2_trial_group, http2_trial_params, params);
 
   const std::string tfo_trial_group =
       base::FieldTrialList::FindFullName(kTCPFastOpenFieldTrialName);
   ConfigureTCPFastOpenParams(tfo_trial_group, params);
 }
 
 }  // namespace network_session_configurator