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

net/http/http_server_properties_impl.cc

Index: net/http/http_server_properties_impl.cc
diff --git a/net/http/http_server_properties_impl.cc b/net/http/http_server_properties_impl.cc
index 7cc4a3298a2f9780dfa30e4059f073ccc824d8e2..1425c00cd1a13e90a889464a846879d071e5d1b9 100644
--- a/net/http/http_server_properties_impl.cc
+++ b/net/http/http_server_properties_impl.cc
@@ -326,8 +326,8 @@ HttpServerPropertiesImpl::GetAlternativeServiceInfos(
         ++it;
         continue;
       }
-      valid_alternative_service_infos.push_back(
-          AlternativeServiceInfo(alternative_service, it->expiration));
+      valid_alternative_service_infos.push_back(AlternativeServiceInfo(
+          alternative_service, it->expiration, it->advertised_versions()));
       ++it;
     }
     if (map_it->second.empty()) {
@@ -362,8 +362,8 @@ HttpServerPropertiesImpl::GetAlternativeServiceInfos(
       ++it;
       continue;
     }
-    valid_alternative_service_infos.push_back(
-        AlternativeServiceInfo(alternative_service, it->expiration));
+    valid_alternative_service_infos.push_back(AlternativeServiceInfo(
+        alternative_service, it->expiration, it->advertised_versions()));
     ++it;
   }
   if (map_it->second.empty()) {
@@ -375,11 +375,13 @@ HttpServerPropertiesImpl::GetAlternativeServiceInfos(
 bool HttpServerPropertiesImpl::SetAlternativeService(
     const url::SchemeHostPort& origin,
     const AlternativeService& alternative_service,
-    base::Time expiration) {
+    base::Time expiration,
+    const QuicVersionVector& advertised_versions) {
   return SetAlternativeServices(
       origin,
       AlternativeServiceInfoVector(
-          /*size=*/1, AlternativeServiceInfo(alternative_service, expiration)));
+          /*size=*/1, AlternativeServiceInfo(alternative_service, expiration,
+                                             advertised_versions)));
 }
 
 bool HttpServerPropertiesImpl::SetAlternativeServices(
@@ -419,6 +421,12 @@ bool HttpServerPropertiesImpl::SetAlternativeServices(
           changed = true;
           break;
         }
+        // Also persist to disk if advertised versions change significantly for
+        // QUIC.
+        if (!old.EqualAdvertisedVersions(*new_it)) {
+          changed = true;
+          break;
+        }
         ++new_it;
       }
     }