HTTP Cache Age calculation mechanism changed with RFC 7234

net/http/http_response_headers.cc

Index: net/http/http_response_headers.cc
diff --git a/net/http/http_response_headers.cc b/net/http/http_response_headers.cc
index dd0977c3dca046bda530e2e8c254fc796491fe8e..0e94bc5bb249386ba6f500e1572fc40f778f60dc 100644
--- a/net/http/http_response_headers.cc
+++ b/net/http/http_response_headers.cc
@@ -1144,9 +1144,9 @@ TimeDelta HttpResponseHeaders::GetCurrentAge(const Time& request_time,
   GetAgeValue(&age_value);
 
   TimeDelta apparent_age = std::max(TimeDelta(), response_time - date_value);
-  TimeDelta corrected_received_age = std::max(apparent_age, age_value);
   TimeDelta response_delay = response_time - request_time;
-  TimeDelta corrected_initial_age = corrected_received_age + response_delay;
+  TimeDelta corrected_age_value = age_value + response_delay;
+  TimeDelta corrected_initial_age = std::max(apparent_age, corrected_age_value);

[mmenke, 2017/01/19 16:11:18]

We should have a test for the changed behavior.

[billyjay, 2017/01/20 19:23:26]

Done.

   TimeDelta resident_time = current_time - response_time;
   TimeDelta current_age = corrected_initial_age + resident_time;