Revert of Revert "Mojoify FetchEvent of Service Worker."

content/common/service_worker/fetch_event_dispatcher.mojom

Index: content/common/service_worker/fetch_event_dispatcher.mojom
diff --git a/content/common/service_worker/fetch_event_dispatcher.mojom b/content/common/service_worker/fetch_event_dispatcher.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..59d0ed1891797d4f49fd904dca578bb1c8fc5c07
--- /dev/null
+++ b/content/common/service_worker/fetch_event_dispatcher.mojom
@@ -0,0 +1,17 @@
+// 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.
+
+module content.mojom;
+
+import "mojo/common/common_custom_types.mojom";
+import "third_party/WebKit/public/platform/modules/serviceworker/service_worker_event_status.mojom";
+
+[Native]
+struct ServiceWorkerFetchRequest;
+
+interface FetchEventDispatcher {
+  DispatchFetchEvent(int32 response_id, ServiceWorkerFetchRequest request)
+      => (blink.mojom.ServiceWorkerEventStatus status,
+          mojo.common.mojom.Time dispatch_event_time);
+};