ServiceWorker: Use mojo's data pipe for respondWith(stream)

third_party/WebKit/public/platform/modules/serviceworker/service_worker_stream_handle.mojom

Index: third_party/WebKit/public/platform/modules/serviceworker/service_worker_stream_handle.mojom
diff --git a/third_party/WebKit/public/platform/modules/serviceworker/service_worker_stream_handle.mojom b/third_party/WebKit/public/platform/modules/serviceworker/service_worker_stream_handle.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..968a6e8ae7078708275703b69ee1a74185956a76
--- /dev/null
+++ b/third_party/WebKit/public/platform/modules/serviceworker/service_worker_stream_handle.mojom
@@ -0,0 +1,17 @@
+// 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 blink.mojom;
+
+// The renderer uses this interface to notify the browser that the stream
+// response passed to respondWith() ended.
+interface ServiceWorkerStreamCallback {
+  OnCompleted();
+  OnAborted();
+};
+
+struct ServiceWorkerStreamHandle {
+  handle<data_pipe_consumer> stream;
+  ServiceWorkerStreamCallback& callback_request;
+};