Create ServiceWorkerProviderHost before starting worker

content/common/service_worker/service_worker_provider.mojom

 // 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.
 
 module content.mojom;
 
 import "content/common/service_worker/service_worker_provider_interfaces.mojom";
 import "content/common/service_worker/service_worker_types.mojom";
 
+// A container object carried from the browser to the renderer process.
+// This contains the params for the constructor of ServiceWorkerNetworkProvider
+// used for starting a service worker.
+struct ServiceWorkerProviderInfoForStartWorker {
+  int32 provider_id;
+  // |registration| and |attributes| are information about the service worker's
+  // registration used to populate ServiceWorkerGlobalScope#registration.
+  ServiceWorkerRegistrationObjectInfo registration;
+  ServiceWorkerVersionAttributes attributes;
+
+  associated ServiceWorkerProviderHost host_ptr_info;
+  associated ServiceWorkerProvider& client_request;
+};
+
 // A container object carried from the renderer to the browser process.
 // This contains the parameters to specify the provider on the browser side.
 // See also comments in
 // content/common/service_worker/service_worker_provider_host_info.h.
 struct ServiceWorkerProviderHostInfo {
   int32 provider_id;
   int32 route_id;
   ServiceWorkerProviderType type;
   bool is_parent_frame_secure;
   associated ServiceWorkerProviderHost& host_request;
   associated ServiceWorkerProvider client_ptr_info;
 };