Introduce the Background Fetch module.

third_party/WebKit/Source/modules/modules_idl_files.gni

 # Copyright 2016 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.
 
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 
 # The paths in this file are absolute since this file is imported and the
 # file lists must be valid from multple "current directories".
 
 bindings_modules_output_dir = "$bindings_output_dir/modules"
@@ skipping 23 matching lines @@
         modules_core_global_constructors_original_interfaces,
         [ "$blink_modules_output_dir/{{source_name_part}}CoreConstructors.idl" ])
 modules_global_constructors_generated_idl_files = process_file_template(
         modules_global_constructors_original_interfaces,
         [ "$blink_modules_output_dir/{{source_name_part}}ModulesConstructors.idl" ])
 
 modules_idl_files =
     get_path_info([
                     "app_banner/AppBannerPromptResult.idl",
                     "app_banner/BeforeInstallPromptEvent.idl",
+                    "background_fetch/BackgroundFetchManager.idl",
                     "background_sync/SyncEvent.idl",
                     "background_sync/SyncManager.idl",
                     "battery/BatteryManager.idl",
                     "bluetooth/Bluetooth.idl",
                     "bluetooth/BluetoothDevice.idl",
                     "bluetooth/BluetoothCharacteristicProperties.idl",
                     "bluetooth/BluetoothRemoteGATTCharacteristic.idl",
                     "bluetooth/BluetoothRemoteGATTDescriptor.idl",
                     "bluetooth/BluetoothRemoteGATTServer.idl",
                     "bluetooth/BluetoothRemoteGATTService.idl",
@@ skipping 494 matching lines @@
                     "webusb/USBDeviceFilter.idl",
                     "webusb/USBDeviceRequestOptions.idl",
                   ],
                   "abspath")
 
 # 'partial interface' or target (right side of) 'implements'
 modules_dependency_idl_files =
     get_path_info(
         [
           "audio_output_devices/HTMLMediaElementAudioOutputDevice.idl",
+          "background_fetch/ServiceWorkerRegistrationBackgroundFetch.idl",
           "background_sync/ServiceWorkerGlobalScopeSync.idl",
           "background_sync/ServiceWorkerRegistrationSync.idl",
           "battery/NavigatorBattery.idl",
           "beacon/NavigatorBeacon.idl",
           "bluetooth/NavigatorBluetooth.idl",
           "budget/NavigatorBudget.idl",
           "budget/WorkerNavigatorBudget.idl",
           "cachestorage/WindowCacheStorage.idl",
           "cachestorage/WorkerCacheStorage.idl",
           "canvas/HTMLCanvasElementModule.idl",
@@ skipping 420 matching lines @@
   "$blink_modules_output_dir/websockets/CloseEventInit.h",
   "$blink_modules_output_dir/webusb/USBConnectionEventInit.cpp",
   "$blink_modules_output_dir/webusb/USBConnectionEventInit.h",
   "$blink_modules_output_dir/webusb/USBControlTransferParameters.cpp",
   "$blink_modules_output_dir/webusb/USBControlTransferParameters.h",
   "$blink_modules_output_dir/webusb/USBDeviceFilter.cpp",
   "$blink_modules_output_dir/webusb/USBDeviceFilter.h",
   "$blink_modules_output_dir/webusb/USBDeviceRequestOptions.cpp",
   "$blink_modules_output_dir/webusb/USBDeviceRequestOptions.h",
 ]