Implement the BackgroundFetch{Fail,ed} Service Worker events

content/common/background_fetch/background_fetch_types.h

Index: content/common/background_fetch/background_fetch_types.h
diff --git a/content/common/background_fetch/background_fetch_types.h b/content/common/background_fetch/background_fetch_types.h
index 27c520b58471197ab4b4c0c962ef76e67b730b9f..263cfa618fa895f99715dd00601fee7830f0e431 100644
--- a/content/common/background_fetch/background_fetch_types.h
+++ b/content/common/background_fetch/background_fetch_types.h
@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "content/common/content_export.h"
+#include "content/common/service_worker/service_worker_types.h"
 
 namespace content {
 
@@ -59,6 +60,18 @@ struct CONTENT_EXPORT BackgroundFetchRegistration {
   // TODO(peter): Support the `activeFetches` member of the specification.
 };
 
+// Represents a request/response pair for a settled Background Fetch fetch.
+// Analogous to the following structure in the spec:
+// http://wicg.github.io/background-fetch/#backgroundfetchsettledfetch
+struct CONTENT_EXPORT BackgroundFetchSettledFetch {
+  BackgroundFetchSettledFetch();
+  BackgroundFetchSettledFetch(const BackgroundFetchSettledFetch& other);
+  ~BackgroundFetchSettledFetch();
+
+  ServiceWorkerFetchRequest request;
+  ServiceWorkerResponse response;
+};
+
 }  // namespace content
 
 #endif  // CONTENT_COMMON_BACKGROUND_FETCH_BACKGROUND_FETCH_TYPES_H_