Show alternative service expiration in net-internals.

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 408ced8501b4d261d4b09fc83a223a8a0e821a6e..1a4291b728754a731a3a051c57077310955e62c0 100644
--- a/net/http/http_server_properties.cc
+++ b/net/http/http_server_properties.cc
@@ -103,8 +103,13 @@ std::string AlternativeService::ToString() const {
 }
 
 std::string AlternativeServiceInfo::ToString() const {
-  return base::StringPrintf("%s, p=%f", alternative_service.ToString().c_str(),
-                            probability);
+  base::Time::Exploded exploded;
+  expiration.LocalExplode(&exploded);
+  return base::StringPrintf("%s, p=%f, expires %04d-%02d-%02d %02d:%02d:%02d",
+                            alternative_service.ToString().c_str(), probability,
+                            exploded.year, exploded.month,
+                            exploded.day_of_month, exploded.hour,
+                            exploded.minute, exploded.second);
 }
 
 // static