[M53 cherry-pick] Migrate ArcUserDataService into ArcAuthService.

chrome/browser/chromeos/arc/arc_enterprise_reporting_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_ENTERPRISE_REPORTING_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_ENTERPRISE_REPORTING_SERVICE_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 15 matching lines @@
   explicit ArcEnterpriseReportingService(ArcBridgeService* arc_bridge_service);
   ~ArcEnterpriseReportingService() override;
 
   // InstanceHolder<mojom::EnterpriseReportingInstance>::Observer overrides:
   void OnInstanceReady() override;
 
   // mojom::EnterpriseReportingHost overrides:
   void ReportManagementState(mojom::ManagementState state) override;
 
  private:
-  // DBus callback, restarts ARC after ARC user data wipe.
-  void RestartArc(bool success);
-
   base::ThreadChecker thread_checker_;
 
   mojo::Binding<mojom::EnterpriseReportingHost> binding_;
 
   base::WeakPtrFactory<ArcEnterpriseReportingService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcEnterpriseReportingService);
 };
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_ENTERPRISE_REPORTING_SERVICE_H_