Added --extended-response to put additional information into PTR responces.

cloud_print/gcp20/prototype/service_parameters.h

Index: cloud_print/gcp20/prototype/service_parameters.h
diff --git a/cloud_print/gcp20/prototype/service_parameters.h b/cloud_print/gcp20/prototype/service_parameters.h
index 881e15f2501a06fe95fb9926956f0f4773a53715..b22b3dd1a9f73b997cf5c3153827e341cd2f2f96 100644
--- a/cloud_print/gcp20/prototype/service_parameters.h
+++ b/cloud_print/gcp20/prototype/service_parameters.h
@@ -20,6 +20,7 @@ struct ServiceParameters {
                     const std::string& service_name_prefix,
                     const std::string& service_domain_name,
                     const net::IPAddressNumber& http_ipv4,
+                    const net::IPAddressNumber& http_ipv6,
                     uint16 http_port);
 
   std::string service_type_;
@@ -27,6 +28,7 @@ struct ServiceParameters {
   std::string service_name_;
   std::string service_domain_name_;
   net::IPAddressNumber http_ipv4_;
+  net::IPAddressNumber http_ipv6_;
   uint16 http_port_;
 };