Implement the Request/Response bits of Background Fetch

third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.idl

Index: third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.idl
diff --git a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.idl b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.idl
new file mode 100644
index 0000000000000000000000000000000000000000..011fca3840bd72627923e1883debb0668254b04d
--- /dev/null
+++ b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.idl
@@ -0,0 +1,14 @@
+// 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.
+
+// https://wicg.github.io/background-fetch/#backgroundfetchfetches
+// TODO(peter): Update either the above link or the name of this interface based
+// on the outcome of https://github.com/WICG/background-fetch/issues/32.
+
+[
+    Exposed=(Window,Worker),
+    RuntimeEnabled=BackgroundFetch
+] interface BackgroundFetchRequest {
+    readonly attribute Request request;
+};