[background-sync] Merge SyncManager and BackgroundSyncProvider

third_party/WebKit/Source/modules/background_sync/BackgroundSyncProvider.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 BackgroundSyncProvider_h
-#define BackgroundSyncProvider_h
-
-#include "public/platform/modules/background_sync/background_sync.mojom-blink.h"
-#include "wtf/Noncopyable.h"
-
-namespace blink {
-
-class ScriptPromiseResolver;
-class WebServiceWorkerRegistration;
-
-// The BackgroundSyncProvider is called by the SyncManager and SyncRegistration
-// objects and communicates with the BackgroundSyncManager object in the browser
-// process. Each thread will have its own instance (e.g. main thread, worker
-// threads), instantiated as needed by SyncManager.  Each instance of the
-// provider creates a new mojo connection to a new BackgroundSyncManagerImpl,
-// which then talks to the BackgroundSyncManager object.
-class BackgroundSyncProvider {
-  WTF_MAKE_NONCOPYABLE(BackgroundSyncProvider);
-
- public:
-  BackgroundSyncProvider() = default;
-
-  void registerBackgroundSync(mojom::blink::SyncRegistrationPtr options,
-                              WebServiceWorkerRegistration*,
-                              ScriptPromiseResolver*);
-  void getRegistrations(WebServiceWorkerRegistration*, ScriptPromiseResolver*);
-
- private:
-  // Callback handlers
-  static void registerCallback(ScriptPromiseResolver*,
-                               mojom::blink::BackgroundSyncError,
-                               mojom::blink::SyncRegistrationPtr options);
-  static void getRegistrationsCallback(
-      ScriptPromiseResolver*,
-      mojom::blink::BackgroundSyncError,
-      mojo::WTFArray<mojom::blink::SyncRegistrationPtr> registrations);
-
-  // Returns an initialized BackgroundSyncServicePtr. A connection with the
-  // the browser's BackgroundSyncService is created the first time this method
-  // is called.
-  mojom::blink::BackgroundSyncServicePtr& GetBackgroundSyncServicePtr();
-
-  mojom::blink::BackgroundSyncServicePtr m_backgroundSyncService;
-};
-
-}  // namespace blink
-
-#endif  // BackgroundSyncProvider_h