Implement the BackgroundFetch{Fail,ed} Service Worker events

third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextProxy.h

Index: third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextProxy.h
diff --git a/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextProxy.h b/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextProxy.h
index d4d5a08ca46e64ace62122f2d4b01df051a12f40..f54746c6513780d39af91ab5722ecf65939acb2d 100644
--- a/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextProxy.h
+++ b/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextProxy.h
@@ -39,6 +39,7 @@
 
 namespace blink {
 
+struct WebBackgroundFetchSettledFetch;
 class WebDataConsumerHandle;
 class WebServiceWorkerRequest;
 class WebString;
@@ -67,7 +68,14 @@ class WebServiceWorkerContextProxy {
       int eventID,
       const WebString& tag,
       BackgroundFetchState status) = 0;
-
+  virtual void dispatchBackgroundFetchFailEvent(
+      int eventID,
+      const WebString& tag,
+      const WebVector<WebBackgroundFetchSettledFetch>& fetches) = 0;
+  virtual void dispatchBackgroundFetchedEvent(
+      int eventID,
+      const WebString& tag,
+      const WebVector<WebBackgroundFetchSettledFetch>& fetches) = 0;
   virtual void dispatchExtendableMessageEvent(
       int eventID,
       const WebString& message,