Mark QUIC broken when the network blackholes after the handshake

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 91a2b15ab088b14d8e51fb39a5cd09b3d91bb4d1..d86b9541ffe9f33fed9d09db14d8210917ac9d70 100644
--- a/components/network_session_configurator/network_session_configurator.cc
+++ b/components/network_session_configurator/network_session_configurator.cc
@@ -115,6 +115,14 @@ bool ShouldDisableQuicWhenConnectionTimesOutWithOpenStreams(
       "true");
 }
 
+bool ShouldMarkQuicBrokenWhenNetworkSuspected(
+    const VariationParameters& quic_trial_params) {
+  return base::LowerCaseEqualsASCII(
+      GetVariationParam(quic_trial_params,
+                        "mark_quic_broken_when_network_suspected"),
+      "true");
+}
+
 bool ShouldQuicDisableConnectionPooling(
     const VariationParameters& quic_trial_params) {
   return base::LowerCaseEqualsASCII(
@@ -335,6 +343,8 @@ void ConfigureQuicParams(base::StringPiece quic_trial_group,
       is_quic_force_enabled);
   params->disable_quic_on_timeout_with_open_streams =
       ShouldDisableQuicWhenConnectionTimesOutWithOpenStreams(quic_trial_params);
+  params->mark_quic_broken_when_network_suspected =
+      ShouldMarkQuicBrokenWhenNetworkSuspected(quic_trial_params);
 
   params->enable_quic_alternative_service_with_different_host =
       ShouldQuicEnableAlternativeServicesForDifferentHost(quic_trial_params);