Use largest supported date for cookies if timegm overflows

base/time/time.h

Index: base/time/time.h
diff --git a/base/time/time.h b/base/time/time.h
index 12e43d9e7a02cf52711684f389a49ac5e51237f2..7b77df5a5ddad53e273699a3f077a58fa1a74869 100644
--- a/base/time/time.h
+++ b/base/time/time.h
@@ -555,6 +555,8 @@ class BASE_EXPORT Time : public time_internal::TimeBase<Time> {
     return FromExploded(true, exploded, time);
   }
 
+  static Time GetMaxPlatformTime() { return Time(); }
+
   // Converts a string representation of time to a Time object.
   // An example of a time string which is converted is as below:-
   // "Tue, 15 Nov 1994 12:45:26 GMT". If the timezone is not specified