Implement a Mojo service for Background Fetch

third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRegistration.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/BackgroundFetchRegistration.h"
 
+#include "modules/background_fetch/BackgroundFetchBridge.h"
 #include "modules/background_fetch/IconDefinition.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
 
 namespace blink {
 
 BackgroundFetchRegistration::BackgroundFetchRegistration(
     ServiceWorkerRegistration* registration,
     String tag,
     HeapVector<IconDefinition> icons,
     long long totalDownloadSize,
@@ skipping 16 matching lines @@
 
 long long BackgroundFetchRegistration::totalDownloadSize() const {
   return m_totalDownloadSize;
 }
 
 String BackgroundFetchRegistration::title() const {
   return m_title;
 }
 
 void BackgroundFetchRegistration::abort() {
-  // TODO(peter): Implement the ability to abort the active background fetch
-  // for the |m_registration| identified by the |m_tag|.
+  BackgroundFetchBridge::from(m_registration)->abort(m_tag);
 }
 
 DEFINE_TRACE(BackgroundFetchRegistration) {
   visitor->trace(m_registration);
   visitor->trace(m_icons);
 }
 
 }  // namespace blink