Add and persist a new field in AlternativeServiceInfo to list QUIC verisons advertised

net/http/http_stream_factory_impl_job_controller.cc

Index: net/http/http_stream_factory_impl_job_controller.cc
diff --git a/net/http/http_stream_factory_impl_job_controller.cc b/net/http/http_stream_factory_impl_job_controller.cc
index b23470229c3543532a51f1e722091ef68a865467..6f1d1668b3c13566fb9cfa81c3a7bf3fcbf84489 100644
--- a/net/http/http_stream_factory_impl_job_controller.cc
+++ b/net/http/http_stream_factory_impl_job_controller.cc
@@ -1024,7 +1024,17 @@ HttpStreamFactoryImpl::JobController::GetAlternativeServiceInfoInternal(
 
     if (session_->quic_stream_factory()->CanUseExistingSession(server_id,
                                                                destination)) {
-      return alternative_service_info;
+      // If advertised versions for QUIC is missing for this
+      // AlternaitverServiceInfo, by default append the list of QUIC versions
+      // supported by this instance of network stack.
+      first_alternative_service_info = alternative_service_info;
+      if (first_alternative_service_info.alternative_service.protocol ==
+              kProtoQUIC &&
+          first_alternative_service_info.advertised_versions().empty()) {
+        first_alternative_service_info.set_advertised_versions(
+            session_->params().quic_supported_versions);
+      }
+      return first_alternative_service_info;
     }
 
     // Cache this entry if we don't have a non-broken Alt-Svc yet.
@@ -1037,6 +1047,16 @@ HttpStreamFactoryImpl::JobController::GetAlternativeServiceInfoInternal(
   if (quic_advertised && quic_all_broken && delegate != nullptr)
     delegate->OnQuicBroken();
 
+  // If advertised versions for QUIC is missing for this
+  // AlternaitverServiceInfo, by default append the list of QUIC versions
+  // supported by this instance of network stack.
+  if (first_alternative_service_info.alternative_service.protocol ==
+          kProtoQUIC &&
+      first_alternative_service_info.advertised_versions().empty()) {
+    first_alternative_service_info.set_advertised_versions(
+        session_->params().quic_supported_versions);
+  }
+
   return first_alternative_service_info;
 }