[Files.app] Split the JavaScript files into subdirectories: common, background, and foreground

chrome/browser/resources/file_manager/js/error_dialog.js

-// Copyright 2013 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.
-
-'use strict';
-
-/**
- * @param {HTMLElement} parentNode Node to be parent for this dialog.
- * @constructor
- */
-function ErrorDialog(parentNode) {
-  cr.ui.dialogs.BaseDialog.call(this, parentNode);
-}
-
-ErrorDialog.prototype = {
-  __proto__: cr.ui.dialogs.BaseDialog.prototype
-};
-
-/**
- * One-time initialization of DOM.
- * @private
- */
-ErrorDialog.prototype.initDom_ = function() {
-  cr.ui.dialogs.BaseDialog.prototype.initDom_.call(this);
-  this.frame_.classList.add('error-dialog-frame');
-  var img = this.document_.createElement('div');
-  img.className = 'error-dialog-img';
-  this.frame_.insertBefore(img, this.text_);
-};