Implement the BackgroundFetch{Fail,ed} Service Worker events

third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.h

Index: third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.h
diff --git a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.h b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.h
index f90fbc0e0a441a59c2a42a060ca634b6ad7172cd..381bf6220502065f603dc660d6a253298c9197db 100644
--- a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.h
+++ b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.h
@@ -5,16 +5,21 @@
 #ifndef BackgroundFetchFailEvent_h
 #define BackgroundFetchFailEvent_h
 
+#include "modules/ModulesExport.h"
 #include "modules/background_fetch/BackgroundFetchEvent.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebVector.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 
 class BackgroundFetchFailEventInit;
 class BackgroundFetchSettledFetch;
+class ScriptState;
+struct WebBackgroundFetchSettledFetch;
 
-class BackgroundFetchFailEvent final : public BackgroundFetchEvent {
+class MODULES_EXPORT BackgroundFetchFailEvent final
+    : public BackgroundFetchEvent {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
@@ -24,6 +29,16 @@ class BackgroundFetchFailEvent final : public BackgroundFetchEvent {
     return new BackgroundFetchFailEvent(type, initializer);
   }
 
+  static BackgroundFetchFailEvent* create(
+      const AtomicString& type,
+      const BackgroundFetchFailEventInit& initializer,
+      const WebVector<WebBackgroundFetchSettledFetch>& fetches,
+      ScriptState* scriptState,
+      WaitUntilObserver* observer) {
+    return new BackgroundFetchFailEvent(type, initializer, fetches, scriptState,
+                                        observer);
+  }
+
   ~BackgroundFetchFailEvent() override;
 
   // Web Exposed attribute defined in the IDL file.
@@ -37,6 +52,12 @@ class BackgroundFetchFailEvent final : public BackgroundFetchEvent {
  private:
   BackgroundFetchFailEvent(const AtomicString& type,
                            const BackgroundFetchFailEventInit&);
+  BackgroundFetchFailEvent(
+      const AtomicString& type,
+      const BackgroundFetchFailEventInit&,
+      const WebVector<WebBackgroundFetchSettledFetch>& fetches,
+      ScriptState*,
+      WaitUntilObserver*);
 
   HeapVector<Member<BackgroundFetchSettledFetch>> m_fetches;
 };