[BackgroundSync Cleanup] Remove periodic sync code

content/browser/background_sync/background_sync_service_impl.h

 // Copyright 2015 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 CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_SERVICE_IMPL_H_
 #define CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_SERVICE_IMPL_H_
 
 #include <stdint.h>
 
 #include "base/id_map.h"
@@ skipping 21 matching lines @@
   friend class BackgroundSyncServiceImplTest;
 
   // BackgroundSyncService methods:
   void Register(content::SyncRegistrationPtr options,
                 int64_t sw_registration_id,
                 bool requested_from_service_worker,
                 const RegisterCallback& callback) override;
   void Unregister(BackgroundSyncRegistrationHandle::HandleId handle_id,
                   int64_t sw_registration_id,
                   const UnregisterCallback& callback) override;
-  void GetRegistration(BackgroundSyncPeriodicity periodicity,
-                       const mojo::String& tag,
+  void GetRegistration(const mojo::String& tag,
                        int64_t sw_registration_id,
                        const GetRegistrationCallback& callback) override;
-  void GetRegistrations(BackgroundSyncPeriodicity periodicity,
-                        int64_t sw_registration_id,
+  void GetRegistrations(int64_t sw_registration_id,
                         const GetRegistrationsCallback& callback) override;
   void GetPermissionStatus(
-      BackgroundSyncPeriodicity periodicity,
       int64_t sw_registration_id,
       const GetPermissionStatusCallback& callback) override;
   void DuplicateRegistrationHandle(
       BackgroundSyncRegistrationHandle::HandleId handle_id,
       const DuplicateRegistrationHandleCallback& callback) override;
   void ReleaseRegistration(
       BackgroundSyncRegistrationHandle::HandleId handle_id) override;
   void NotifyWhenFinished(BackgroundSyncRegistrationHandle::HandleId handle_id,
                           const NotifyWhenFinishedCallback& callback) override;
 
@@ skipping 24 matching lines @@
         BackgroundSyncRegistrationHandle::HandleId> active_handles_;
 
   base::WeakPtrFactory<BackgroundSyncServiceImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundSyncServiceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_SERVICE_IMPL_H_