Check error returned from RefreshPolicy calls

chromeos/dbus/auth_policy_client.cc

Index: chromeos/dbus/auth_policy_client.cc
diff --git a/chromeos/dbus/auth_policy_client.cc b/chromeos/dbus/auth_policy_client.cc
index 43578e3f67470183c8f91813253e192220a804a6..7725b84fff198cd713c7d7434c9f461cfd4a6bd5 100644
--- a/chromeos/dbus/auth_policy_client.cc
+++ b/chromeos/dbus/auth_policy_client.cc
@@ -98,7 +98,8 @@ class AuthPolicyClientImpl : public AuthPolicyClient {
       callback.Run(false);
       return;
     }
-    callback.Run(true);
+    dbus::MessageReader reader(response);
+    callback.Run(GetErrorFromReader(&reader) == authpolicy::ERROR_NONE);
   }
 
   void HandleJoinCallback(const JoinCallback& callback,