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

chrome/browser/resources/file_manager/js/app_installer.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';
-
-/**
- * Manage the installation of apps.
- *
- * @param {string} itemId Item id to be installed.
- * @constructor
- * @extends {cr.EventType}
- */
-function AppInstaller(itemId) {
-  this.itemId_ = itemId;
-  this.callback_ = null;
-
-  Object.seal(this);
-}
-
-AppInstaller.prototype = {
-};
-
-/**
- * Type of result.
- *
- * @enum {string}
- * @const
- */
-AppInstaller.Result = {
-  SUCCESS: 'AppInstaller.success',
-  CANCELLED: 'AppInstaller.cancelled',
-  ERROR: 'AppInstaller.error'
-};
-Object.freeze(AppInstaller.Result);
-
-/**
- * Error message for user cancellation. This must be match with the constant
- * 'kUserCancelledError' in C/B/extensions/webstore_standalone_installer.cc.
- * @type {string}
- * @const
- * @private
- */
-AppInstaller.USER_CANCELLED_ERROR_STR_ = 'User cancelled install';
-
-/**
- * Start an installation.
- * @param {function(boolean, string)} callback Called when the installation is
- *     finished.
- */
-AppInstaller.prototype.install = function(callback) {
-  this.callback_ = callback;
-  chrome.fileBrowserPrivate.installWebstoreItem(
-      this.itemId_,
-      function() {
-        this.onInstallCompleted_(chrome.runtime.lastError);
-      }.bind(this));
-};
-
-/**
- * Called when the installation is completed.
- *
- * @param {{message: string}?} error Null if the installation is success,
- *     otherwise an object which contains error message.
- * @private
- */
-AppInstaller.prototype.onInstallCompleted_ = function(error) {
-  var installerResult = AppInstaller.Result.SUCCESS;
-  var errorMessage = '';
-  if (error) {
-    installerResult =
-        error.message == AppInstaller.USER_CANCELLED_ERROR_STR_ ?
-        AppInstaller.Result.CANCELLED :
-        AppInstaller.Result.ERROR;
-    errorMessage = error.message;
-  }
-  this.callback_(installerResult, errorMessage);
-  this.callback_ = null;
-};