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

third_party/WebKit/Source/platform/exported/WebServiceWorkerStreamHandle.cpp

+// 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.
+
+#include "public/platform/modules/serviceworker/WebServiceWorkerStreamHandle.h"
+
+namespace blink {
+
+void WebServiceWorkerStreamHandle::setListener(
+    std::unique_ptr<Listener> listener) {
+  DCHECK(!m_listener);
+  m_listener = std::move(listener);
+}
+
+void WebServiceWorkerStreamHandle::aborted() {
+  DCHECK(m_listener);
+  m_listener->OnAborted();
+}
+
+void WebServiceWorkerStreamHandle::completed() {
+  DCHECK(m_listener);
+  m_listener->OnCompleted();
+}
+
+mojo::ScopedDataPipeConsumerHandle
+WebServiceWorkerStreamHandle::drainStreamDataPipe() {
+  return std::move(m_stream);
+}
+
+}  // namespace blink