Implement the BackgroundFetch{Fail,ed} Service Worker events

third_party/WebKit/public/platform/modules/background_fetch/WebBackgroundFetchSettledFetch.h

Index: third_party/WebKit/public/platform/modules/background_fetch/WebBackgroundFetchSettledFetch.h
diff --git a/third_party/WebKit/public/platform/modules/background_fetch/WebBackgroundFetchSettledFetch.h b/third_party/WebKit/public/platform/modules/background_fetch/WebBackgroundFetchSettledFetch.h
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index 0000000000000000000000000000000000000000..e5b7e90e19087ad1e24ea9db44a33631d32341ba
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+++ b/third_party/WebKit/public/platform/modules/background_fetch/WebBackgroundFetchSettledFetch.h
@@ -0,0 +1,27 @@
+// 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.
+
+#ifndef WebBackgroundFetchSettledFetch_h
+#define WebBackgroundFetchSettledFetch_h
+
+#include "public/platform/WebCommon.h"
+#include "public/platform/modules/serviceworker/WebServiceWorkerRequest.h"
+#include "public/platform/modules/serviceworker/WebServiceWorkerResponse.h"
+
+namespace blink {
+
+// Represents a request/response pair for a settled Background Fetch.
+// Analogous to the following structure in the spec:
+// http://wicg.github.io/background-fetch/#backgroundfetchsettledfetch
+struct WebBackgroundFetchSettledFetch {
+  WebBackgroundFetchSettledFetch() = default;
+  ~WebBackgroundFetchSettledFetch() = default;
+
+  WebServiceWorkerRequest request;
+  WebServiceWorkerResponse response;
+};
+
+}  // namespace blink
+
+#endif  // WebBackgroundFetchSettledFetch_h