Tether: record each type of host connection result.

chromeos/components/tether/initializer.cc

Index: chromeos/components/tether/initializer.cc
diff --git a/chromeos/components/tether/initializer.cc b/chromeos/components/tether/initializer.cc
index b6af3b5f323f45fae4f5d09b859016c860e681dd..28cb6cdde13f05b32719905d4a815a2003510ac0 100644
--- a/chromeos/components/tether/initializer.cc
+++ b/chromeos/components/tether/initializer.cc
@@ -9,6 +9,7 @@
 #include "chromeos/components/tether/active_host_network_state_updater.h"
 #include "chromeos/components/tether/ble_connection_manager.h"
 #include "chromeos/components/tether/device_id_tether_network_guid_map.h"
+#include "chromeos/components/tether/host_connection_metrics_logger.h"
 #include "chromeos/components/tether/host_scan_cache.h"
 #include "chromeos/components/tether/host_scan_device_prioritizer_impl.h"
 #include "chromeos/components/tether/host_scan_scheduler.h"
@@ -191,8 +192,11 @@ void Initializer::OnBluetoothAdapterAdvertisingIntervalSet(
           device_id_tether_network_guid_map_.get());
   network_state_handler_->set_tether_sort_delegate(
       host_scan_device_prioritizer_.get());
+  host_connection_metrics_logger_ =
+      base::MakeUnique<HostConnectionMetricsLogger>();
   wifi_hotspot_connector_ = base::MakeUnique<WifiHotspotConnector>(
-      network_state_handler_, network_connect_);
+      network_state_handler_, network_connect_,
+      host_connection_metrics_logger_.get());
   active_host_ =
       base::MakeUnique<ActiveHost>(tether_host_fetcher_.get(), pref_service_);
   active_host_network_state_updater_ =
@@ -218,7 +222,7 @@ void Initializer::OnBluetoothAdapterAdvertisingIntervalSet(
       tether_host_fetcher_.get(), ble_connection_manager_.get(),
       tether_host_response_recorder_.get(),
       device_id_tether_network_guid_map_.get(), host_scan_cache_.get(),
-      notification_presenter_.get());
+      notification_presenter_.get(), host_connection_metrics_logger_.get());
   network_configuration_remover_ =
       base::MakeUnique<NetworkConfigurationRemover>(
           network_state_handler_, managed_network_configuration_handler_);