Stop foreground depending on background in gyp v2

ui/file_manager/file_manager/background/js/media_import_handler.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.
 
 // Namespace
 var importer = importer || {};
 
 /**
- * Interface providing access to information about active import processes.
- *
- * @interface
- */
-importer.ImportRunner = function() {};
-
-/**
- * Imports all media identified by scanResult.
- *
- * @param {!importer.ScanResult} scanResult
- * @param {!importer.Destination} destination
- * @param {!Promise<!DirectoryEntry>} directoryPromise
- *
- * @return {!importer.MediaImportHandler.ImportTask} The resulting import task.
- */
-importer.ImportRunner.prototype.importFromScanResult;
-
-/**
  * Handler for importing media from removable devices into the user's Drive.
  *
  * @constructor
  * @implements {importer.ImportRunner}
  * @struct
  *
  * @param {!ProgressCenter} progressCenter
  * @param {!importer.HistoryLoader} historyLoader
  * @param {!importer.DispositionChecker.CheckerFunction} dispositionChecker
  * @param {!analytics.Tracker} tracker
@@ skipping 567 matching lines @@
             metrics.ImportEvents.FILES_DEDUPLICATED
                 .label(disposition)
                 .value(count));
       }.bind(this));
 
   this.tracker_.send(
       metrics.ImportEvents.FILES_DEDUPLICATED
           .label('all-duplicates')
           .value(totalDeduped));
 };