Removed most of path utility functions in Files app.

chrome/browser/resources/file_manager/foreground/js/file_tasks.js

 // 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.
  *
  * @param {FileManager} fileManager FileManager instance.
@@ skipping 193 matching lines @@
 /**
  * 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) {
-    // TODO(mtomasz): Use Entry instead of paths.
-    if (PathUtil.isDriveBasedPath(this.entries_[index].fullPath)) {
+    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.
@@ skipping 630 matching lines @@
       items, defaultIdx,
       function(item) {
         onSuccess(item.task);
       });
 };
 
 FileTasks.decorate('display');
 FileTasks.decorate('updateMenuItem');
 FileTasks.decorate('execute');
 FileTasks.decorate('executeDefault');