Revert "Revert of QUIC - Race Cert Verification with host resolution if

components/network_session_configurator/network_session_configurator.cc

Index: components/network_session_configurator/network_session_configurator.cc
diff --git a/components/network_session_configurator/network_session_configurator.cc b/components/network_session_configurator/network_session_configurator.cc
index f2f70aef79c616f71a78e038662306c73b5ddf13..2039321611b61084b339e4dce01755a6f212d271 100644
--- a/components/network_session_configurator/network_session_configurator.cc
+++ b/components/network_session_configurator/network_session_configurator.cc
@@ -346,6 +346,12 @@ bool ShouldQuicMigrateSessionsEarly(
       GetVariationParam(quic_trial_params, "migrate_sessions_early"), "true");
 }
 
+bool ShouldQuicRaceCertVerification(
+    const VariationParameters& quic_trial_params) {
+  return base::LowerCaseEqualsASCII(
+      GetVariationParam(quic_trial_params, "race_cert_verification"), "true");
+}
+
 size_t GetQuicMaxPacketLength(const base::CommandLine& command_line,
                               const VariationParameters& quic_trial_params) {
   if (command_line.HasSwitch(switches::kQuicMaxPacketLength)) {
@@ -455,6 +461,8 @@ void ConfigureQuicParams(const base::CommandLine& command_line,
         ShouldQuicMigrateSessionsOnNetworkChange(quic_trial_params);
     params->quic_migrate_sessions_early =
         ShouldQuicMigrateSessionsEarly(quic_trial_params);
+    params->quic_race_cert_verification =
+        ShouldQuicRaceCertVerification(quic_trial_params);
   }
 
   size_t max_packet_length =