Network service: Implement URLLoader chaining for interceptors

content/browser/service_worker/service_worker_response_type.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_BROWSER_SERVICE_WORKER_SERVICE_WORKER_RESPONSE_TYPE_H_
+#define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_RESPONSE_TYPE_H_
+
+namespace content {
+
+// Response handling type, used in URL {request,loader} jobs.
+enum ServiceWorkerResponseType {
+  NOT_DETERMINED,
+  FAIL_DUE_TO_LOST_CONTROLLER,
+  FALLBACK_TO_NETWORK,
+  FALLBACK_TO_RENDERER,  // Use this when falling back with CORS check
+  FORWARD_TO_SERVICE_WORKER
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_RESPONSE_TYPE_H_