Compile file_manager/common and volume_manager_wrapper in v2 syntax.

ui/file_manager/file_manager/common/js/importer_common.js

 // Copyright 2014 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.
 
 // Shared cloud importer namespace
 var importer = importer || {};
 
 /** @enum {string} */
 importer.ScanEvent = {
   FINALIZED: 'finalized',
@@ skipping 31 matching lines @@
  * @enum {string}
  */
 importer.Setting = {
   HAS_COMPLETED_IMPORT: 'importer-has-completed-import',
   MACHINE_ID: 'importer-machine-id',
   PHOTOS_APP_ENABLED: 'importer-photo-app-enabled',
   LAST_KNOWN_LOG_ID: 'importer-last-known-log-id'
 };
 
 /**
- * @typedef {function(
- *     !importer.ScanEvent, importer.ScanResult)}
- */
-importer.ScanObserver;
-
-/**
  * Volume types eligible for the affections of Cloud Import.
  * @private @const {!Array<!VolumeManagerCommon.VolumeType>}
  */
 importer.ELIGIBLE_VOLUME_TYPES_ = [
   VolumeManagerCommon.VolumeType.MTP,
   VolumeManagerCommon.VolumeType.REMOVABLE
 ];
 
 /**
  * Root dir names for valid import locations.
@@ skipping 898 matching lines @@
 
 /**
  * Fetch analytics.Tracker from background page.
  * @return {!Promise<!analytics.Tracker>}
  * @private
  */
 importer.getTracker_ = function() {
   return new Promise(
       function(resolve, reject) {
         chrome.runtime.getBackgroundPage(
-          /** @param {Window=} opt_background */
-          function(opt_background) {
+          function(/** BackgroundWindow */ opt_background) {
             if (chrome.runtime.lastError) {
               reject(chrome.runtime.lastError);
             }
             opt_background.background.ready(
                 function() {
                   resolve(opt_background.background.tracker);
                 });
           });
       });
 };
@@ skipping 111 matching lines @@
       });
 };
 
 /** @private @const {!importer.ChromeLocalStorage} */
 importer.ChromeLocalStorage.INSTANCE_ = new importer.ChromeLocalStorage();
 
 /** @return {!importer.ChromeLocalStorage} */
 importer.ChromeLocalStorage.getInstance = function() {
   return importer.ChromeLocalStorage.INSTANCE_;
 };