[Merge M56] arc: Restore UMA statistics for failures in LSO flow.

chrome/browser/chromeos/arc/arc_auth_service.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 
 #include <memory>
 #include <ostream>
 #include <string>
@@ skipping 190 matching lines @@
 
   // sync_preferences::SyncedPrefObserver
   void OnSyncedPrefChanged(const std::string& path, bool from_sync) override;
 
   // ArcSupportHost::Observer:
   void OnWindowClosed() override;
   void OnTermsAgreed(bool is_metrics_enabled,
                      bool is_backup_and_restore_enabled,
                      bool is_location_service_enabled) override;
   void OnAuthSucceeded(const std::string& auth_code) override;
+  void OnAuthFailed() override;
+
   void OnRetryClicked() override;
   void OnSendFeedbackClicked() override;
 
   // arc::ArcOptInPreferenceHandlerObserver:
   void OnMetricsModeChanged(bool enabled, bool managed) override;
   void OnBackupAndRestoreModeChanged(bool enabled, bool managed) override;
   void OnLocationServicesModeChanged(bool enabled, bool managed) override;
 
   // Stops ARC without changing ArcEnabled preference.
   void StopArc();
@@ skipping 94 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ArcAuthService);
 };
 
 // Outputs the stringified |state| to |os|. This is only for logging purposes.
 std::ostream& operator<<(std::ostream& os, const ArcAuthService::State& state);
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_