Do not sync ARC opt-in preference

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>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "chrome/browser/chromeos/arc/arc_android_management_checker_delegate.h"
 #include "chrome/browser/chromeos/arc/arc_auth_context_delegate.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/arc_service.h"
 #include "components/arc/common/auth.mojom.h"
 #include "components/arc/instance_holder.h"
 #include "components/prefs/pref_change_registrar.h"
-#include "components/syncable_prefs/pref_service_syncable_observer.h"
-#include "components/syncable_prefs/synced_pref_observer.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 class ArcAppLauncher;
 class Profile;
 
 namespace ash {
 class ShelfDelegate;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace arc {
 
 class ArcAndroidManagementChecker;
 class ArcAuthContext;
 enum class ProvisioningResult : int;
 
 // This class proxies the request from the client to fetch an auth code from
 // LSO. It lives on the UI thread.
 class ArcAuthService : public ArcService,
                        public mojom::AuthHost,
                        public ArcBridgeService::Observer,
                        public InstanceHolder<mojom::AuthInstance>::Observer,
                        public ArcAndroidManagementCheckerDelegate,
-                       public ArcAuthContextDelegate,
-                       public syncable_prefs::PrefServiceSyncableObserver,
-                       public syncable_prefs::SyncedPrefObserver {
+                       public ArcAuthContextDelegate {
  public:
   enum class State {
     NOT_INITIALIZED,  // Service is not initialized.
     STOPPED,          // ARC is not running.
     FETCHING_CODE,    // ARC may be running or not. Auth code is fetching.
     ACTIVE,           // ARC is running.
   };
 
   enum class UIPage {
     NO_PAGE,              // Hide everything.
@@ skipping 94 matching lines @@
   // Called from Arc support platform app when user cancels signing.
   void CancelAuthCode();
 
   bool IsArcManaged() const;
   bool IsArcEnabled() const;
 
   // This requires Arc to be allowed (|IsAllowed|)for current profile.
   void EnableArc();
   void DisableArc();
 
-  // syncable_prefs::PrefServiceSyncableObserver
-  void OnIsSyncingChanged() override;
-
-  // syncable_prefs::SyncedPrefObserver
-  void OnSyncedPrefChanged(const std::string& path, bool from_sync) override;
-
   // ArcAuthContextDelegate:
   void OnContextReady() override;
   void OnPrepareContextFailed() override;
 
   // ArcAndroidManagementCheckerDelegate:
   void OnAndroidManagementChecked(
       policy::AndroidManagementClient::Result result) override;
 
   // Stops ARC without changing ArcEnabled preference.
   void StopArc();
@@ skipping 46 matching lines @@
   base::WeakPtrFactory<ArcAuthService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcAuthService);
 };
 
 std::ostream& operator<<(std::ostream& os, const ArcAuthService::State& state);
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_