Extract kArcEnabled preference from ArcSessionManager part 2.

chrome/browser/chromeos/arc/arc_service_launcher.cc

 // 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.
 
 #include "chrome/browser/chromeos/arc/arc_service_launcher.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.h"
 #include "chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.h"
 #include "chrome/browser/chromeos/arc/arc_auth_service.h"
+#include "chrome/browser/chromeos/arc/arc_play_store_enabled_preference_handler.h"
 #include "chrome/browser/chromeos/arc/arc_session_manager.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
 #include "chrome/browser/chromeos/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.h"
 #include "chrome/browser/chromeos/arc/downloads_watcher/arc_downloads_watcher_service.h"
 #include "chrome/browser/chromeos/arc/enterprise/arc_enterprise_reporting_service.h"
 #include "chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner.h"
 #include "chrome/browser/chromeos/arc/fileapi/arc_file_system_service.h"
 #include "chrome/browser/chromeos/arc/intent_helper/arc_settings_service.h"
 #include "chrome/browser/chromeos/arc/notification/arc_boot_error_notification.h"
 #include "chrome/browser/chromeos/arc/policy/arc_policy_bridge.h"
@@ skipping 150 matching lines @@
   // Kiosk apps should be run only for kiosk sessions.
   if (user_manager::UserManager::Get()->IsLoggedInAsArcKioskApp()) {
     // ArcKioskAppService is BrowserContextKeyedService so that it's destroyed
     // on destroying the Profile, that is after ArcServiceLauncher::Shutdown().
     arc_service_manager_->AddService(base::MakeUnique<ArcKioskBridge>(
         arc_service_manager_->arc_bridge_service(),
         chromeos::ArcKioskAppService::Get(profile)));
   }
 
   arc_session_manager_->SetProfile(profile);
-  arc_session_manager_->StartPreferenceHandler();
+  arc_play_store_enabled_preference_handler_ =
+      base::MakeUnique<ArcPlayStoreEnabledPreferenceHandler>(
+          profile, arc_session_manager_.get());
+  arc_play_store_enabled_preference_handler_->Start();
 }
 
 void ArcServiceLauncher::Shutdown() {
-  DCHECK(arc_service_manager_);
   // Destroy in the reverse order of the initialization.
-  arc_service_manager_->Shutdown();
+  arc_play_store_enabled_preference_handler_.reset();
+  if (arc_service_manager_)
+    arc_service_manager_->Shutdown();
   arc_session_manager_.reset();
   arc_service_manager_.reset();
 }
 
 }  // namespace arc