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

net/http/http_server_properties.cc

Index: net/http/http_server_properties.cc
diff --git a/net/http/http_server_properties.cc b/net/http/http_server_properties.cc
index 2d7bcecc1cf7e2a68d8f1263452c4887ae409255..04f6d1a8a359107b40ebe84914e60db86e5db038 100644
--- a/net/http/http_server_properties.cc
+++ b/net/http/http_server_properties.cc
@@ -78,6 +78,26 @@ bool IsAlternateProtocolValid(NextProto protocol) {
   return false;
 }
 
+AlternativeServiceInfo::AlternativeServiceInfo() : alternative_service() {}
+
+AlternativeServiceInfo::~AlternativeServiceInfo() {}
+
+AlternativeServiceInfo::AlternativeServiceInfo(
+    const AlternativeService& alternative_service,
+    base::Time expiration)
+    : alternative_service(alternative_service), expiration(expiration) {}
+
+AlternativeServiceInfo::AlternativeServiceInfo(
+    const AlternativeService& alternative_service,
+    base::Time expiration,
+    const QuicVersionVector& advertised_versions)
+    : alternative_service(alternative_service),
+      expiration(expiration),
+      advertised_versions(advertised_versions) {}
+
+AlternativeServiceInfo::AlternativeServiceInfo(
+    const AlternativeServiceInfo& alternative_service_info) = default;
+
 std::string AlternativeService::ToString() const {
   return base::StringPrintf("%s %s:%d", NextProtoToString(protocol),
                             host.c_str(), port);