Service Worker event dispatcher for Background Fetch

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

 // 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.
 
 #include "modules/background_fetch/BackgroundFetchFailEvent.h"
 
 #include "modules/EventModulesNames.h"
 #include "modules/background_fetch/BackgroundFetchFailEventInit.h"
 #include "modules/background_fetch/BackgroundFetchSettledFetch.h"
 
 namespace blink {
 
 BackgroundFetchFailEvent::BackgroundFetchFailEvent(
     const AtomicString& type,
     const BackgroundFetchFailEventInit& init)
-    : BackgroundFetchEvent(type, init), m_fetches(init.fetches()) {}
+    : BackgroundFetchEvent(type, init, nullptr /* observer */),
+      m_fetches(init.fetches()) {}
 
 BackgroundFetchFailEvent::~BackgroundFetchFailEvent() = default;
 
 HeapVector<Member<BackgroundFetchSettledFetch>>
 BackgroundFetchFailEvent::fetches() const {
   return m_fetches;
 }
 
 const AtomicString& BackgroundFetchFailEvent::interfaceName() const {
   return EventNames::BackgroundFetchFailEvent;
 }
 
 DEFINE_TRACE(BackgroundFetchFailEvent) {
   visitor->trace(m_fetches);
   BackgroundFetchEvent::trace(visitor);
 }
 
 }  // namespace blink