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 386a00d0fe3e53c356865c2ce47088f3e245e1b0..39ac6b4e28db3e22d5479b3a27c1558da4d07a0d 100644
--- a/net/http/http_server_properties.cc
+++ b/net/http/http_server_properties.cc
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/stringprintf.h"
+#include "net/http/http_network_session.h"
 #include "net/socket/ssl_client_socket.h"
 #include "net/ssl/ssl_config.h"
 
@@ -78,6 +79,24 @@ 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) {
+  if (alternative_service.protocol == kProtoQUIC)
+    advertised_versions = HttpNetworkSession::Params().quic_supported_versions;

[Ryan Hamilton, 2017/05/25 22:01:45]

I don't think this is the right thing to do. This is the default list of
version. It is not the set of versions used by the current instance of the
network stack, may have been configured via finch or command line flag.

+}
+
+AlternativeServiceInfo::AlternativeServiceInfo(
+    const AlternativeServiceInfo& alternative_service_info) = default;
+
+AlternativeServiceInfo& AlternativeServiceInfo::operator=(
+    const AlternativeServiceInfo& alternative_service_info) = default;
+
 std::string AlternativeService::ToString() const {
   return base::StringPrintf("%s %s:%d", NextProtoToString(protocol),
                             host.c_str(), port);