QUIC - added disable_delay_tcp_race field trial param to disable delaying of racing TCP connection

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 8c4aff15630a58183d5a9fb6e5b110535db10f2a..275459c268ef189ba0616f9f21c5782ea627c271 100644
--- a/components/network_session_configurator/network_session_configurator.cc
+++ b/components/network_session_configurator/network_session_configurator.cc
@@ -333,6 +333,11 @@ int GetQuicSocketReceiveBufferSize(
   return 0;
 }
 
+bool ShouldQuicDelayTcpRace(const VariationParameters& quic_trial_params) {
+  return !base::LowerCaseEqualsASCII(
+      GetVariationParam(quic_trial_params, "disable_delay_tcp_race"), "true");
+}
+
 bool ShouldQuicCloseSessionsOnIpChange(
     const VariationParameters& quic_trial_params) {
   return base::LowerCaseEqualsASCII(
@@ -459,6 +464,7 @@ void ConfigureQuicParams(const base::CommandLine& command_line,
     if (receive_buffer_size != 0) {
       params->quic_socket_receive_buffer_size = receive_buffer_size;
     }
+    params->quic_delay_tcp_race = ShouldQuicDelayTcpRace(quic_trial_params);
     float load_server_info_timeout_srtt_multiplier =
         GetQuicLoadServerInfoTimeoutSrttMultiplier(quic_trial_params);
     if (load_server_info_timeout_srtt_multiplier != 0) {