Tether: record each type of host connection result.

chromeos/components/tether/initializer.h

Index: chromeos/components/tether/initializer.h
diff --git a/chromeos/components/tether/initializer.h b/chromeos/components/tether/initializer.h
index a1b69446d5ed40d5baac6383035ac83a15455b46..be92cc57eaa34632dfdd949331f7984b1c9bbe80 100644
--- a/chromeos/components/tether/initializer.h
+++ b/chromeos/components/tether/initializer.h
@@ -44,6 +44,7 @@ class HostScanner;
 class HostScanScheduler;
 class HostScanDevicePrioritizerImpl;
 class KeepAliveScheduler;
+class HostConnectionMetricsLogger;
 class NetworkConfigurationRemover;
 class NotificationPresenter;
 class TetherConnector;
@@ -132,6 +133,7 @@ class Initializer : public OAuth2TokenService::Observer {
   std::unique_ptr<base::DefaultClock> clock_;
   std::unique_ptr<HostScanner> host_scanner_;
   std::unique_ptr<HostScanScheduler> host_scan_scheduler_;
+  std::unique_ptr<HostConnectionMetricsLogger> host_connection_metrics_logger_;
   std::unique_ptr<TetherConnector> tether_connector_;
   std::unique_ptr<TetherDisconnector> tether_disconnector_;
   std::unique_ptr<NetworkConfigurationRemover> network_configuration_remover_;