Tether: record each type of host connection result.

chromeos/components/tether/tether_disconnector_impl_unittest.cc

Index: chromeos/components/tether/tether_disconnector_impl_unittest.cc
diff --git a/chromeos/components/tether/tether_disconnector_impl_unittest.cc b/chromeos/components/tether/tether_disconnector_impl_unittest.cc
index ccd4c9f87bc578d05ab978207a97ef22d184550d..ebf08aa88a755b25bd667051ed3fc8e647e19821 100644
--- a/chromeos/components/tether/tether_disconnector_impl_unittest.cc
+++ b/chromeos/components/tether/tether_disconnector_impl_unittest.cc
@@ -110,7 +110,8 @@ class TestTetherConnector : public TetherConnector {
                         nullptr /* tether_host_response_recorder */,
                         nullptr /* device_id_tether_network_guid_map */,
                         nullptr /* host_scan_cache */,
-                        nullptr /* notification_presenter */),
+                        nullptr /* notification_presenter */,
+                        nullptr /* host_connection_metrics_logger */),
         should_cancel_successfully_(true) {}
   ~TestTetherConnector() override {}