Stop foreground depending on background in gyp v2

ui/file_manager/externs/background_window_common.js

Index: ui/file_manager/externs/background_window_common.js
diff --git a/ui/file_manager/externs/background_window_common.js b/ui/file_manager/externs/background_window_common.js
deleted file mode 100644
index 201f00d757a21c55aada387899082559020edf1f..0000000000000000000000000000000000000000
--- a/ui/file_manager/externs/background_window_common.js
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.
-
-var volumeManagerFactory = {};
-
-/**
- * @param {function(VolumeManager)=} opt_callback
- * @return {Promise}
- */
-volumeManagerFactory.getInstance = function(opt_callback) {};
-
-/**
- * @return {VolumeManager}
- */
-volumeManagerFactory.getInstanceForDebug = function() {};
-
-volumeManagerFactory.revokeInstanceForTesting = function() {};