Implement the infrastructure of creating WorkerFetchContext in worker global scope.

content/renderer/service_worker/worker_fetch_context_impl.h

+// Copyright 2017 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_SERVICE_WORKER_WORKER_FETCH_CONTEXT_IMPL_H_
+#define CONTENT_RENDERER_SERVICE_WORKER_WORKER_FETCH_CONTEXT_IMPL_H_
+
+#include "content/common/service_worker/service_worker_types.h"
+#include "content/common/worker_url_loader_factory_provider.mojom.h"
+#include "mojo/public/cpp/bindings/associated_binding.h"
+#include "third_party/WebKit/public/platform/WebWorkerFetchContext.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}  // namespace base
+
+namespace content {
+
+class ResourceDispatcher;
+
+class WorkerFetchContextImpl : public blink::WebWorkerFetchContext,
+                               public mojom::ServiceWorkerWorkerClient {
+ public:
+  explicit WorkerFetchContextImpl(
+      mojom::WorkerURLLoaderFactoryProviderPtrInfo provider_info);
+  ~WorkerFetchContextImpl() override;
+
+  // blink::WebWorkerFetchContext implementation:
+  void InitializeOnWorkerThread(base::SingleThreadTaskRunner*) override;
+  std::unique_ptr<blink::WebURLLoader> CreateURLLoader() override;
+  void WillSendRequest(blink::WebURLRequest&) override;
+  bool IsControlledByServiceWorker() const override;
+
+  // mojom::ServiceWorkerWorkerClient implementation:
+  void SetControllerServiceWorker(int64_t controller_version_id) override;
+
+  // Sets the service worker status of the parent frame.
+  void set_service_worker_provider_id(int id);
+  void set_is_controlled_by_service_worker(bool flag);
+
+ private:
+  mojom::WorkerURLLoaderFactoryProviderPtrInfo provider_info_;
+  int service_worker_provider_id_ = kInvalidServiceWorkerProviderId;
+  bool is_controlled_by_service_worker_ = false;
+
+  // Initialized on the worker thread when InitializeOnWorkerThread() is called.
+  std::unique_ptr<ResourceDispatcher> resource_dispatcher_;
+  std::unique_ptr<mojo::AssociatedBinding<mojom::ServiceWorkerWorkerClient>>
+      binding_;
+  mojom::WorkerURLLoaderFactoryProviderPtr provider_;
+  mojom::URLLoaderFactoryAssociatedPtr url_loader_factory_;
+
+  // Updated when mojom::ServiceWorkerWorkerClient::SetControllerServiceWorker()
+  // is called from the browser process via mojo IPC.
+  int controller_version_id_ = kInvalidServiceWorkerVersionId;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_SERVICE_WORKER_WORKER_FETCH_CONTEXT_IMPL_H_