[proof-of-concept] SW thread independent of the main thread

content/browser/service_worker/service_worker_service_impl.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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_SERVICE_IMPL_H_
+#define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_SERVICE_IMPL_H_
+
+#include "base/macros.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "third_party/WebKit/public/platform/modules/serviceworker/service_worker.mojom.h"
+
+namespace content {
+class ServiceWorkerContextCore;
+
+class ServiceWorkerServiceImpl : public blink::mojom::ServiceWorkerService {
+ public:
+  ServiceWorkerServiceImpl(base::WeakPtr<ServiceWorkerContextCore> context,
+                           blink::mojom::ServiceWorkerServiceRequest request);
+  ~ServiceWorkerServiceImpl() override;
+
+  void ReplaceContext(base::WeakPtr<ServiceWorkerContextCore> context);
+
+ private:
+  void WorkerStarted(int32_t embedded_worker_id) override;
+
+  // Called when an error is detected on binding_.
+  void OnConnectionError();
+
+  base::WeakPtr<ServiceWorkerContextCore> context_;
+  mojo::Binding<blink::mojom::ServiceWorkerService> binding_;
+  DISALLOW_COPY_AND_ASSIGN(ServiceWorkerServiceImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_SERVICE_IMPL_H_