[BackgroundSync] Remove BackgroundSyncRegistrationHandle

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 20 matching lines @@
  private:
   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 GetRegistrations(int64_t sw_registration_id,
                         const GetRegistrationsCallback& callback) override;
-  void DuplicateRegistrationHandle(
-      BackgroundSyncRegistrationHandle::HandleId handle_id,
-      const DuplicateRegistrationHandleCallback& callback) override;
-  void ReleaseRegistration(
-      BackgroundSyncRegistrationHandle::HandleId handle_id) override;
 
   void OnRegisterResult(const RegisterCallback& callback,
                         BackgroundSyncStatus status,
-                        scoped_ptr<BackgroundSyncRegistrationHandle> result);
+                        scoped_ptr<BackgroundSyncRegistration> result);
   void OnGetRegistrationsResult(
       const GetRegistrationsCallback& callback,
       BackgroundSyncStatus status,
-      scoped_ptr<ScopedVector<BackgroundSyncRegistrationHandle>> result);
+      scoped_ptr<ScopedVector<BackgroundSyncRegistration>> result);
 
   // Called when an error is detected on binding_.
   void OnConnectionError();
 
   // background_sync_context_ owns this.
   BackgroundSyncContextImpl* background_sync_context_;
 
   mojo::Binding<BackgroundSyncService> binding_;
 
-  // The registrations that the client might reference.
-  IDMap<BackgroundSyncRegistrationHandle,
-        IDMapOwnPointer,
-        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_