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

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

Index: third_party/WebKit/Source/platform/exported/WebServiceWorkerStreamHandle.cpp
diff --git a/third_party/WebKit/Source/platform/exported/WebServiceWorkerStreamHandle.cpp b/third_party/WebKit/Source/platform/exported/WebServiceWorkerStreamHandle.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d08046c2f4ddcb5376b10cb79bd12255c625eda6
--- /dev/null
+++ b/third_party/WebKit/Source/platform/exported/WebServiceWorkerStreamHandle.cpp
@@ -0,0 +1,30 @@
+// 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(!listener_);
+  listener_ = std::move(listener);
+}
+
+void WebServiceWorkerStreamHandle::Aborted() {
+  DCHECK(listener_);
+  listener_->OnAborted();
+}
+
+void WebServiceWorkerStreamHandle::Completed() {
+  DCHECK(listener_);
+  listener_->OnCompleted();
+}
+
+mojo::ScopedDataPipeConsumerHandle
+WebServiceWorkerStreamHandle::DrainStreamDataPipe() {
+  return std::move(stream_);
+}
+
+}  // namespace blink