BackgroundSyncManager tracks client registrations

content/child/background_sync/background_sync_provider.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_CHILD_BACKGROUND_SYNC_BACKGROUND_SYNC_PROVIDER_H_
 #define CONTENT_CHILD_BACKGROUND_SYNC_BACKGROUND_SYNC_PROVIDER_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 10 matching lines @@
 // BackgroundSyncManager object in the browser process. This class is
 // instantiated on the main thread by BlinkPlatformImpl, and its methods can be
 // called directly from the main thread.
 class BackgroundSyncProvider : public blink::WebSyncProvider {
  public:
   explicit BackgroundSyncProvider(ServiceRegistry* service_registry);
 
   ~BackgroundSyncProvider() override;
 
   // blink::WebSyncProvider implementation
+  // TODO(jkarlin) convert int64_t handle_id to int handle_id in all
+  // WebSyncProvider functions.
   void registerBackgroundSync(
       const blink::WebSyncRegistration* options,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       bool requested_from_service_worker,
       blink::WebSyncRegistrationCallbacks* callbacks);
+  // TODO(jkarlin) remove |tag| parameter.
   void unregisterBackgroundSync(
       blink::WebSyncRegistration::Periodicity periodicity,
-      int64_t id,
+      int64_t handle_id,
       const blink::WebString& tag,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       blink::WebSyncUnregistrationCallbacks* callbacks);
   void getRegistration(
       blink::WebSyncRegistration::Periodicity,
       const blink::WebString& tag,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       blink::WebSyncRegistrationCallbacks* callbacks);
   void getRegistrations(
       blink::WebSyncRegistration::Periodicity periodicity,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       blink::WebSyncGetRegistrationsCallbacks* callbacks);
   void getPermissionStatus(
       blink::WebSyncRegistration::Periodicity periodicity,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       blink::WebSyncGetPermissionStatusCallbacks* callbacks);
+  // TODO(jkarlin): Rename to releaseRegistrationHandle.
+  void releaseRegistration(int64_t handle_id);
+
+  void DuplicateRegistrationHandle(
+      int handle_id,
+      const BackgroundSyncService::DuplicateRegistrationHandleCallback&
+          callback);
 
  private:
   // Callback handlers
   void RegisterCallback(
       scoped_ptr<blink::WebSyncRegistrationCallbacks> callbacks,
       BackgroundSyncError error,
       const SyncRegistrationPtr& options);
   void UnregisterCallback(
       scoped_ptr<blink::WebSyncUnregistrationCallbacks> callbacks,
       BackgroundSyncError error);
@@ skipping 15 matching lines @@
 
   ServiceRegistry* service_registry_;
   BackgroundSyncServicePtr background_sync_service_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundSyncProvider);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_BACKGROUND_SYNC_BACKGROUND_SYNC_PROVIDER_H_