Change IPEndpoint::address() to return a net::IPAddress

net/dns/dns_config_service.cc

Index: net/dns/dns_config_service.cc
diff --git a/net/dns/dns_config_service.cc b/net/dns/dns_config_service.cc
index 447f7083c1fa2f73d7cd4afc9be35af610ae5f4e..11f4719e533cbb74fa59e6d91e201f16aec05e01 100644
--- a/net/dns/dns_config_service.cc
+++ b/net/dns/dns_config_service.cc
@@ -48,7 +48,7 @@ NameServerClassifier::NameServersType NameServerClassifier::GetNameServersType(
   for (std::vector<IPEndPoint>::const_iterator it = nameservers.begin();
        it != nameservers.end();
        ++it) {
-    type = MergeNameServersTypes(type, GetNameServerType(it->address()));
+    type = MergeNameServersTypes(type, GetNameServerType(it->address_number()));
   }
   return type;
 }