Remove InterfaceRegistry/Provider from service workers

content/renderer/background_sync/background_sync_client_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_RENDERER_BACKGROUND_SYNC_BACKGROUND_SYNC_CLIENT_IMPL_H_
-#define CONTENT_RENDERER_BACKGROUND_SYNC_BACKGROUND_SYNC_CLIENT_IMPL_H_
-
-#include <stdint.h>
-
-#include <map>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "content/common/content_export.h"
-#include "third_party/WebKit/public/platform/modules/background_sync/background_sync.mojom.h"
-
-namespace content {
-
-class CONTENT_EXPORT BackgroundSyncClientImpl
-    : public NON_EXPORTED_BASE(blink::mojom::BackgroundSyncServiceClient) {
- public:
-  static void Create(blink::mojom::BackgroundSyncServiceClientRequest request);
-
-  ~BackgroundSyncClientImpl() override;
-
- private:
-  BackgroundSyncClientImpl();
-
-  // BackgroundSyncServiceClient methods:
-  void Sync(const std::string& tag,
-            blink::mojom::BackgroundSyncEventLastChance last_chance,
-            const SyncCallback& callback) override;
-
-  DISALLOW_COPY_AND_ASSIGN(BackgroundSyncClientImpl);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_BACKGROUND_SYNC_BACKGROUND_SYNC_CLIENT_IMPL_H_