Tether: record each type of host connection result.

chromeos/components/tether/wifi_hotspot_connector.h

Index: chromeos/components/tether/wifi_hotspot_connector.h
diff --git a/chromeos/components/tether/wifi_hotspot_connector.h b/chromeos/components/tether/wifi_hotspot_connector.h
index a947454154be256906973fae8879bc96711c8bf5..b3c8554890f6ce6c7db5d748784243a66fc094c6 100644
--- a/chromeos/components/tether/wifi_hotspot_connector.h
+++ b/chromeos/components/tether/wifi_hotspot_connector.h
@@ -22,11 +22,15 @@ class NetworkStateHandler;
 
 namespace tether {
 
+class HostConnectionMetricsLogger;
+
 // Connects to a Wi-Fi hotspot, given an SSID and password.
 class WifiHotspotConnector : public NetworkStateHandlerObserver {
  public:
-  WifiHotspotConnector(NetworkStateHandler* network_state_handler,
-                       NetworkConnect* network_connect);
+  WifiHotspotConnector(
+      NetworkStateHandler* network_state_handler,
+      NetworkConnect* network_connect,
+      HostConnectionMetricsLogger* host_connection_metrics_logger);
   ~WifiHotspotConnector() override;
 
   // Function which receives the GUID of the connected Wi-Fi hotspot. If
@@ -63,6 +67,7 @@ class WifiHotspotConnector : public NetworkStateHandlerObserver {
 
   NetworkStateHandler* network_state_handler_;
   NetworkConnect* network_connect_;
+  HostConnectionMetricsLogger* host_connection_metrics_logger_;
   std::unique_ptr<base::Timer> timer_;
 
   std::string ssid_;