Remove some platform specific stuff from views.

ui/file_manager/file_manager/foreground/js/file_tasks.js

Index: ui/file_manager/file_manager/foreground/js/file_tasks.js
diff --git a/ui/file_manager/file_manager/foreground/js/file_tasks.js b/ui/file_manager/file_manager/foreground/js/file_tasks.js
deleted file mode 100644
index fcf383a4bb872c39245b0ca806621602bfae2b86..0000000000000000000000000000000000000000
--- a/ui/file_manager/file_manager/foreground/js/file_tasks.js
+++ /dev/null
@@ -1,741 +0,0 @@
-// Copyright (c) 2012 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';
-
-/**
- * This object encapsulates everything related to tasks execution.
- *
- * TODO(hirono): Pass each component instead of the entire FileManager.
- * @param {FileManager} fileManager FileManager instance.
- * @param {Object=} opt_params File manager load parameters.
- * @constructor
- */
-function FileTasks(fileManager, opt_params) {
-  this.fileManager_ = fileManager;
-  this.params_ = opt_params;
-  this.tasks_ = null;
-  this.defaultTask_ = null;
-  this.entries_ = null;
-
-  /**
-   * List of invocations to be called once tasks are available.
-   *
-   * @private
-   * @type {Array.<Object>}
-   */
-  this.pendingInvocations_ = [];
-}
-
-/**
- * Location of the Chrome Web Store.
- *
- * @const
- * @type {string}
- */
-FileTasks.CHROME_WEB_STORE_URL = 'https://chrome.google.com/webstore';
-
-/**
- * Base URL of apps list in the Chrome Web Store. This constant is used in
- * FileTasks.createWebStoreLink().
- *
- * @const
- * @type {string}
- */
-FileTasks.WEB_STORE_HANDLER_BASE_URL =
-    'https://chrome.google.com/webstore/category/collection/file_handlers';
-
-
-/**
- * The app ID of the video player app.
- * @const
- * @type {string}
- */
-FileTasks.VIDEO_PLAYER_ID = 'jcgeabjmjgoblfofpppfkcoakmfobdko';
-
-/**
- * Returns URL of the Chrome Web Store which show apps supporting the given
- * file-extension and mime-type.
- *
- * @param {?string} extension Extension of the file (with the first dot).
- * @param {?string} mimeType Mime type of the file.
- * @return {string} URL
- */
-FileTasks.createWebStoreLink = function(extension, mimeType) {
-  if (!extension || FileTasks.EXECUTABLE_EXTENSIONS.indexOf(extension) !== -1)
-    return FileTasks.CHROME_WEB_STORE_URL;
-
-  if (extension[0] === '.')
-    extension = extension.substr(1);
-  else
-    console.warn('Please pass an extension with a dot to createWebStoreLink.');
-
-  var url = FileTasks.WEB_STORE_HANDLER_BASE_URL;
-  url += '?_fe=' + extension.toLowerCase().replace(/[^\w]/g, '');
-
-  // If a mime is given, add it into the URL.
-  if (mimeType)
-    url += '&_fmt=' + mimeType.replace(/[^-\w\/]/g, '');
-  return url;
-};
-
-/**
- * Complete the initialization.
- *
- * @param {Array.<Entry>} entries List of file entries.
- * @param {Array.<string>=} opt_mimeTypes Mime-type specified for each entries.
- */
-FileTasks.prototype.init = function(entries, opt_mimeTypes) {
-  this.entries_ = entries;
-  this.mimeTypes_ = opt_mimeTypes || [];
-
-  // TODO(mtomasz): Move conversion from entry to url to custom bindings.
-  // crbug.com/345527.
-  var urls = util.entriesToURLs(entries);
-  if (urls.length > 0)
-    chrome.fileManagerPrivate.getFileTasks(urls, this.onTasks_.bind(this));
-};
-
-/**
- * Returns amount of tasks.
- *
- * @return {number} amount of tasks.
- */
-FileTasks.prototype.size = function() {
-  return (this.tasks_ && this.tasks_.length) || 0;
-};
-
-/**
- * Callback when tasks found.
- *
- * @param {Array.<Object>} tasks The tasks.
- * @private
- */
-FileTasks.prototype.onTasks_ = function(tasks) {
-  this.processTasks_(tasks);
-  for (var index = 0; index < this.pendingInvocations_.length; index++) {
-    var name = this.pendingInvocations_[index][0];
-    var args = this.pendingInvocations_[index][1];
-    this[name].apply(this, args);
-  }
-  this.pendingInvocations_ = [];
-};
-
-/**
- * The list of known extensions to record UMA.
- * Note: Because the data is recorded by the index, so new item shouldn't be
- * inserted.
- *
- * @const
- * @type {Array.<string>}
- * @private
- */
-FileTasks.UMA_INDEX_KNOWN_EXTENSIONS_ = Object.freeze([
-  'other', '.3ga', '.3gp', '.aac', '.alac', '.asf', '.avi', '.bmp', '.csv',
-  '.doc', '.docx', '.flac', '.gif', '.jpeg', '.jpg', '.log', '.m3u', '.m3u8',
-  '.m4a', '.m4v', '.mid', '.mkv', '.mov', '.mp3', '.mp4', '.mpg', '.odf',
-  '.odp', '.ods', '.odt', '.oga', '.ogg', '.ogv', '.pdf', '.png', '.ppt',
-  '.pptx', '.ra', '.ram', '.rar', '.rm', '.rtf', '.wav', '.webm', '.webp',
-  '.wma', '.wmv', '.xls', '.xlsx', '.crdownload', '.crx', '.dmg', '.exe',
-  '.html', 'htm', '.jar', '.ps', '.torrent', '.txt', '.zip',
-]);
-
-/**
- * The list of executable file extensions.
- *
- * @const
- * @type {Array.<string>}
- */
-FileTasks.EXECUTABLE_EXTENSIONS = Object.freeze([
-  '.exe', '.lnk', '.deb', '.dmg', '.jar', '.msi',
-]);
-
-/**
- * The list of extensions to skip the suggest app dialog.
- * @const
- * @type {Array.<string>}
- * @private
- */
-FileTasks.EXTENSIONS_TO_SKIP_SUGGEST_APPS_ = Object.freeze([
-  '.crdownload', '.dsc', '.inf', '.crx',
-]);
-
-/**
- * Records trial of opening file grouped by extensions.
- *
- * @param {Array.<Entry>} entries The entries to be opened.
- * @private
- */
-FileTasks.recordViewingFileTypeUMA_ = function(entries) {
-  for (var i = 0; i < entries.length; i++) {
-    var entry = entries[i];
-    var extension = FileType.getExtension(entry).toLowerCase();
-    if (FileTasks.UMA_INDEX_KNOWN_EXTENSIONS_.indexOf(extension) < 0) {
-      extension = 'other';
-    }
-    metrics.recordEnum(
-        'ViewingFileType', extension, FileTasks.UMA_INDEX_KNOWN_EXTENSIONS_);
-  }
-};
-
-/**
- * Returns true if the taskId is for an internal task.
- *
- * @param {string} taskId Task identifier.
- * @return {boolean} True if the task ID is for an internal task.
- * @private
- */
-FileTasks.isInternalTask_ = function(taskId) {
-  var taskParts = taskId.split('|');
-  var appId = taskParts[0];
-  var taskType = taskParts[1];
-  var actionId = taskParts[2];
-  // The action IDs here should match ones used in executeInternalTask_().
-  return (appId === chrome.runtime.id &&
-          taskType === 'file' &&
-          (actionId === 'play' ||
-           actionId === 'mount-archive'));
-};
-
-/**
- * Processes internal tasks.
- *
- * @param {Array.<Object>} tasks The tasks.
- * @private
- */
-FileTasks.prototype.processTasks_ = function(tasks) {
-  this.tasks_ = [];
-  var id = chrome.runtime.id;
-  var isOnDrive = false;
-  var fm = this.fileManager_;
-  for (var index = 0; index < this.entries_.length; ++index) {
-    var locationInfo = fm.volumeManager.getLocationInfo(this.entries_[index]);
-    if (locationInfo && locationInfo.isDriveBased) {
-      isOnDrive = true;
-      break;
-    }
-  }
-
-  for (var i = 0; i < tasks.length; i++) {
-    var task = tasks[i];
-    var taskParts = task.taskId.split('|');
-
-    // Skip internal Files.app's handlers.
-    if (taskParts[0] === id && (taskParts[2] === 'auto-open' ||
-        taskParts[2] === 'select' || taskParts[2] === 'open')) {
-      continue;
-    }
-
-    // Tweak images, titles of internal tasks.
-    if (taskParts[0] === id && taskParts[1] === 'file') {
-      if (taskParts[2] === 'play') {
-        // TODO(serya): This hack needed until task.iconUrl is working
-        //             (see GetFileTasksFileBrowserFunction::RunImpl).
-        task.iconType = 'audio';
-        task.title = loadTimeData.getString('ACTION_LISTEN');
-      } else if (taskParts[2] === 'mount-archive') {
-        task.iconType = 'archive';
-        task.title = loadTimeData.getString('MOUNT_ARCHIVE');
-      } else if (taskParts[2] === 'open-hosted-generic') {
-        if (this.entries_.length > 1)
-          task.iconType = 'generic';
-        else // Use specific icon.
-          task.iconType = FileType.getIcon(this.entries_[0]);
-        task.title = loadTimeData.getString('ACTION_OPEN');
-      } else if (taskParts[2] === 'open-hosted-gdoc') {
-        task.iconType = 'gdoc';
-        task.title = loadTimeData.getString('ACTION_OPEN_GDOC');
-      } else if (taskParts[2] === 'open-hosted-gsheet') {
-        task.iconType = 'gsheet';
-        task.title = loadTimeData.getString('ACTION_OPEN_GSHEET');
-      } else if (taskParts[2] === 'open-hosted-gslides') {
-        task.iconType = 'gslides';
-        task.title = loadTimeData.getString('ACTION_OPEN_GSLIDES');
-      } else if (taskParts[2] === 'view-swf') {
-        // Do not render this task if disabled.
-        if (!loadTimeData.getBoolean('SWF_VIEW_ENABLED'))
-          continue;
-        task.iconType = 'generic';
-        task.title = loadTimeData.getString('ACTION_VIEW');
-      } else if (taskParts[2] === 'view-pdf') {
-        // Do not render this task if disabled.
-        if (!loadTimeData.getBoolean('PDF_VIEW_ENABLED'))
-          continue;
-        task.iconType = 'pdf';
-        task.title = loadTimeData.getString('ACTION_VIEW');
-      } else if (taskParts[2] === 'view-in-browser') {
-        task.iconType = 'generic';
-        task.title = loadTimeData.getString('ACTION_VIEW');
-      }
-    }
-
-    if (!task.iconType && taskParts[1] === 'web-intent') {
-      task.iconType = 'generic';
-    }
-
-    this.tasks_.push(task);
-    if (this.defaultTask_ === null && task.isDefault) {
-      this.defaultTask_ = task;
-    }
-  }
-  if (!this.defaultTask_ && this.tasks_.length > 0) {
-    // If we haven't picked a default task yet, then just pick the first one.
-    // This is not the preferred way we want to pick this, but better this than
-    // no default at all if the C++ code didn't set one.
-    this.defaultTask_ = this.tasks_[0];
-  }
-};
-
-/**
- * Executes default task.
- *
- * @param {function(boolean, Array.<Entry>)=} opt_callback Called when the
- *     default task is executed, or the error is occurred.
- * @private
- */
-FileTasks.prototype.executeDefault_ = function(opt_callback) {
-  FileTasks.recordViewingFileTypeUMA_(this.entries_);
-  this.executeDefaultInternal_(this.entries_, opt_callback);
-};
-
-/**
- * Executes default task.
- *
- * @param {Array.<Entry>} entries Entries to execute.
- * @param {function(boolean, Array.<Entry>)=} opt_callback Called when the
- *     default task is executed, or the error is occurred.
- * @private
- */
-FileTasks.prototype.executeDefaultInternal_ = function(entries, opt_callback) {
-  var callback = opt_callback || function(arg1, arg2) {};
-
-  if (this.defaultTask_ !== null) {
-    this.executeInternal_(this.defaultTask_.taskId, entries);
-    callback(true, entries);
-    return;
-  }
-
-  // We don't have tasks, so try to show a file in a browser tab.
-  // We only do that for single selection to avoid confusion.
-  if (entries.length !== 1 || !entries[0])
-    return;
-
-  var filename = entries[0].name;
-  var extension = util.splitExtension(filename)[1];
-  var mimeType = this.mimeTypes_[0];
-
-  var showAlert = function() {
-    var textMessageId;
-    var titleMessageId;
-    switch (extension) {
-      case '.exe':
-      case '.msi':
-        textMessageId = 'NO_ACTION_FOR_EXECUTABLE';
-        break;
-      case '.dmg':
-        textMessageId = 'NO_ACTION_FOR_DMG';
-        break;
-      case '.crx':
-        textMessageId = 'NO_ACTION_FOR_CRX';
-        titleMessageId = 'NO_ACTION_FOR_CRX_TITLE';
-        break;
-      default:
-        textMessageId = 'NO_ACTION_FOR_FILE';
-    }
-
-    var webStoreUrl = FileTasks.createWebStoreLink(extension, mimeType);
-    var text = strf(textMessageId, webStoreUrl, str('NO_ACTION_FOR_FILE_URL'));
-    var title = titleMessageId ? str(titleMessageId) : filename;
-    this.fileManager_.alert.showHtml(title, text, function() {});
-    callback(false, entries);
-  }.bind(this);
-
-  var onViewFilesFailure = function() {
-    var fm = this.fileManager_;
-    if (!fm.isOnDrive() ||
-        !entries[0] ||
-        FileTasks.EXTENSIONS_TO_SKIP_SUGGEST_APPS_.indexOf(extension) !== -1) {
-      showAlert();
-      return;
-    }
-
-    fm.openSuggestAppsDialog(
-        entries[0],
-        function() {
-          var newTasks = new FileTasks(fm);
-          newTasks.init(entries, this.mimeTypes_);
-          newTasks.executeDefault();
-          callback(true, entries);
-        }.bind(this),
-        // Cancelled callback.
-        function() {
-          callback(false, entries);
-        },
-        showAlert);
-  }.bind(this);
-
-  var onViewFiles = function(result) {
-    switch (result) {
-      case 'opened':
-        callback(true, entries);
-        break;
-      case 'message_sent':
-        util.isTeleported(window).then(function(teleported) {
-          if (teleported) {
-            util.showOpenInOtherDesktopAlert(
-                this.fileManager_.ui.alertDialog, entries);
-          }
-        }.bind(this));
-        callback(true, entries);
-        break;
-      case 'empty':
-        callback(true, entries);
-        break;
-      case 'failed':
-        onViewFilesFailure();
-        break;
-    }
-  }.bind(this);
-
-  this.checkAvailability_(function() {
-    // TODO(mtomasz): Move conversion from entry to url to custom bindings.
-    // crbug.com/345527.
-    var urls = util.entriesToURLs(entries);
-    var taskId = chrome.runtime.id + '|file|view-in-browser';
-    chrome.fileManagerPrivate.executeTask(taskId, urls, onViewFiles);
-  }.bind(this));
-};
-
-/**
- * Executes a single task.
- *
- * @param {string} taskId Task identifier.
- * @param {Array.<Entry>=} opt_entries Entries to xecute on instead of
- *     this.entries_|.
- * @private
- */
-FileTasks.prototype.execute_ = function(taskId, opt_entries) {
-  var entries = opt_entries || this.entries_;
-  FileTasks.recordViewingFileTypeUMA_(entries);
-  this.executeInternal_(taskId, entries);
-};
-
-/**
- * The core implementation to execute a single task.
- *
- * @param {string} taskId Task identifier.
- * @param {Array.<Entry>} entries Entries to execute.
- * @private
- */
-FileTasks.prototype.executeInternal_ = function(taskId, entries) {
-  this.checkAvailability_(function() {
-    if (FileTasks.isInternalTask_(taskId)) {
-      var taskParts = taskId.split('|');
-      this.executeInternalTask_(taskParts[2], entries);
-    } else {
-      // TODO(mtomasz): Move conversion from entry to url to custom bindings.
-      // crbug.com/345527.
-      var urls = util.entriesToURLs(entries);
-      chrome.fileManagerPrivate.executeTask(taskId, urls, function(result) {
-        if (result !== 'message_sent')
-          return;
-        util.isTeleported(window).then(function(teleported) {
-          if (teleported) {
-            util.showOpenInOtherDesktopAlert(
-                this.fileManager_.ui.alertDialog, entries);
-          }
-        }.bind(this));
-      }.bind(this));
-    }
-  }.bind(this));
-};
-
-/**
- * Checks whether the remote files are available right now.
- *
- * @param {function()} callback The callback.
- * @private
- */
-FileTasks.prototype.checkAvailability_ = function(callback) {
-  var areAll = function(props, name) {
-    var isOne = function(e) {
-      // If got no properties, we safely assume that item is unavailable.
-      return e && e[name];
-    };
-    return props.filter(isOne).length === props.length;
-  };
-
-  var fm = this.fileManager_;
-  var entries = this.entries_;
-
-  var isDriveOffline = fm.volumeManager.getDriveConnectionState().type ===
-      VolumeManagerCommon.DriveConnectionType.OFFLINE;
-
-  if (fm.isOnDrive() && isDriveOffline) {
-    fm.metadataCache_.get(entries, 'external', function(props) {
-      if (areAll(props, 'availableOffline')) {
-        callback();
-        return;
-      }
-
-      fm.alert.showHtml(
-          loadTimeData.getString('OFFLINE_HEADER'),
-          props[0].hosted ?
-              loadTimeData.getStringF(
-                  entries.length === 1 ?
-                      'HOSTED_OFFLINE_MESSAGE' :
-                      'HOSTED_OFFLINE_MESSAGE_PLURAL') :
-              loadTimeData.getStringF(
-                  entries.length === 1 ?
-                      'OFFLINE_MESSAGE' :
-                      'OFFLINE_MESSAGE_PLURAL',
-                  loadTimeData.getString('OFFLINE_COLUMN_LABEL')));
-    });
-    return;
-  }
-
-  var isOnMetered = fm.volumeManager.getDriveConnectionState().type ===
-      VolumeManagerCommon.DriveConnectionType.METERED;
-
-  if (fm.isOnDrive() && isOnMetered) {
-    fm.metadataCache_.get(entries, 'external', function(driveProps) {
-      if (areAll(driveProps, 'availableWhenMetered')) {
-        callback();
-        return;
-      }
-
-      fm.metadataCache_.get(entries, 'filesystem', function(fileProps) {
-        var sizeToDownload = 0;
-        for (var i = 0; i !== entries.length; i++) {
-          if (!driveProps[i].availableWhenMetered)
-            sizeToDownload += fileProps[i].size;
-        }
-        fm.confirm.show(
-            loadTimeData.getStringF(
-                entries.length === 1 ?
-                    'CONFIRM_MOBILE_DATA_USE' :
-                    'CONFIRM_MOBILE_DATA_USE_PLURAL',
-                util.bytesToString(sizeToDownload)),
-            callback);
-      });
-    });
-    return;
-  }
-
-  callback();
-};
-
-/**
- * Executes an internal task.
- *
- * @param {string} id The short task id.
- * @param {Array.<Entry>} entries The entries to execute on.
- * @private
- */
-FileTasks.prototype.executeInternalTask_ = function(id, entries) {
-  var fm = this.fileManager_;
-
-  if (id === 'mount-archive') {
-    this.mountArchivesInternal_(entries);
-    return;
-  }
-
-  console.error('Unexpected action ID: ' + id);
-};
-
-/**
- * Mounts archives.
- *
- * @param {Array.<Entry>} entries Mount file entries list.
- */
-FileTasks.prototype.mountArchives = function(entries) {
-  FileTasks.recordViewingFileTypeUMA_(entries);
-  this.mountArchivesInternal_(entries);
-};
-
-/**
- * The core implementation of mounts archives.
- *
- * @param {Array.<Entry>} entries Mount file entries list.
- * @private
- */
-FileTasks.prototype.mountArchivesInternal_ = function(entries) {
-  var fm = this.fileManager_;
-
-  var tracker = fm.directoryModel.createDirectoryChangeTracker();
-  tracker.start();
-
-  // TODO(mtomasz): Move conversion from entry to url to custom bindings.
-  // crbug.com/345527.
-  var urls = util.entriesToURLs(entries);
-  for (var index = 0; index < urls.length; ++index) {
-    // TODO(mtomasz): Pass Entry instead of URL.
-    fm.volumeManager.mountArchive(
-        urls[index],
-        function(volumeInfo) {
-          if (tracker.hasChanged) {
-            tracker.stop();
-            return;
-          }
-          volumeInfo.resolveDisplayRoot(function(displayRoot) {
-            if (tracker.hasChanged) {
-              tracker.stop();
-              return;
-            }
-            fm.directoryModel.changeDirectoryEntry(displayRoot);
-          }, function() {
-            console.warn('Failed to resolve the display root after mounting.');
-            tracker.stop();
-          });
-        }, function(url, error) {
-          tracker.stop();
-          var path = util.extractFilePath(url);
-          var namePos = path.lastIndexOf('/');
-          fm.alert.show(strf('ARCHIVE_MOUNT_FAILED',
-                             path.substr(namePos + 1), error));
-        }.bind(null, urls[index]));
-  }
-};
-
-/**
- * Displays the list of tasks in a task picker combobutton.
- *
- * @param {cr.ui.ComboButton} combobutton The task picker element.
- * @private
- */
-FileTasks.prototype.display_ = function(combobutton) {
-  if (this.tasks_.length === 0) {
-    combobutton.hidden = true;
-    return;
-  }
-
-  combobutton.clear();
-  combobutton.hidden = false;
-  combobutton.defaultItem = this.createCombobuttonItem_(this.defaultTask_);
-
-  var items = this.createItems_();
-
-  if (items.length > 1) {
-    var defaultIdx = 0;
-
-    for (var j = 0; j < items.length; j++) {
-      combobutton.addDropDownItem(items[j]);
-      if (items[j].task.taskId === this.defaultTask_.taskId)
-        defaultIdx = j;
-    }
-
-    combobutton.addSeparator();
-    var changeDefaultMenuItem = combobutton.addDropDownItem({
-      label: loadTimeData.getString('CHANGE_DEFAULT_MENU_ITEM')
-    });
-    changeDefaultMenuItem.classList.add('change-default');
-  }
-};
-
-/**
- * Creates sorted array of available task descriptions such as title and icon.
- *
- * @return {Array} created array can be used to feed combobox, menus and so on.
- * @private
- */
-FileTasks.prototype.createItems_ = function() {
-  var items = [];
-  var title = this.defaultTask_.title + ' ' +
-              loadTimeData.getString('DEFAULT_ACTION_LABEL');
-  items.push(this.createCombobuttonItem_(this.defaultTask_, title, true));
-
-  for (var index = 0; index < this.tasks_.length; index++) {
-    var task = this.tasks_[index];
-    if (task !== this.defaultTask_)
-      items.push(this.createCombobuttonItem_(task));
-  }
-
-  items.sort(function(a, b) {
-    return a.label.localeCompare(b.label);
-  });
-
-  return items;
-};
-
-/**
- * Updates context menu with default item.
- * @private
- */
-
-FileTasks.prototype.updateMenuItem_ = function() {
-  this.fileManager_.updateContextMenuActionItems(this.defaultTask_,
-      this.tasks_.length > 1);
-};
-
-/**
- * Creates combobutton item based on task.
- *
- * @param {Object} task Task to convert.
- * @param {string=} opt_title Title.
- * @param {boolean=} opt_bold Make a menu item bold.
- * @return {Object} Item appendable to combobutton drop-down list.
- * @private
- */
-FileTasks.prototype.createCombobuttonItem_ = function(task, opt_title,
-                                                      opt_bold) {
-  return {
-    label: opt_title || task.title,
-    iconUrl: task.iconUrl,
-    iconType: task.iconType,
-    task: task,
-    bold: opt_bold || false
-  };
-};
-
-/**
- * Shows modal action picker dialog with currently available list of tasks.
- *
- * @param {cr.filebrowser.DefaultActionDialog} actionDialog Action dialog to
- *     show and update.
- * @param {string} title Title to use.
- * @param {string} message Message to use.
- * @param {function(Object)} onSuccess Callback to pass selected task.
- */
-FileTasks.prototype.showTaskPicker = function(actionDialog, title, message,
-                                              onSuccess) {
-  var items = this.createItems_();
-
-  var defaultIdx = 0;
-  for (var j = 0; j < items.length; j++) {
-    if (items[j].task.taskId === this.defaultTask_.taskId)
-      defaultIdx = j;
-  }
-
-  actionDialog.show(
-      title,
-      message,
-      items, defaultIdx,
-      function(item) {
-        onSuccess(item.task);
-      });
-};
-
-/**
- * Decorates a FileTasks method, so it will be actually executed after the tasks
- * are available.
- * This decorator expects an implementation called |method + '_'|.
- *
- * @param {string} method The method name.
- */
-FileTasks.decorate = function(method) {
-  var privateMethod = method + '_';
-  FileTasks.prototype[method] = function() {
-    if (this.tasks_) {
-      this[privateMethod].apply(this, arguments);
-    } else {
-      this.pendingInvocations_.push([privateMethod, arguments]);
-    }
-    return this;
-  };
-};
-
-FileTasks.decorate('display');
-FileTasks.decorate('updateMenuItem');
-FileTasks.decorate('execute');
-FileTasks.decorate('executeDefault');