Remove sourceOnDrive and targetOnDrive from FileCopyManager.Task.

chrome/browser/resources/file_manager/js/file_manager_commands.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';
 
 var CommandUtil = {};
 
 /**
  * Extracts root on which command event was dispatched.
@@ skipping 498 matching lines @@
   }
 };
 
 /**
  * Creates zip file for current selection.
  */
 Commands.zipSelectionCommand = {
   execute: function(event, fileManager, directoryModel) {
     var dirEntry = directoryModel.getCurrentDirEntry();
     var selectionEntries = fileManager.getSelection().entries;
-    fileManager.copyManager_.zipSelection(dirEntry, fileManager.isOnDrive(),
-                                          selectionEntries);
+    fileManager.copyManager_.zipSelection(dirEntry, selectionEntries);
   },
   canExecute: function(event, fileManager) {
     var selection = fileManager.getSelection();
     event.canExecute = !fileManager.isOnReadonlyDirectory() &&
         !fileManager.isOnDrive() &&
         selection && selection.totalCount > 0;
   }
 };
 
 /**
@@ skipping 101 matching lines @@
 
 /**
  * Reset the zoom factor.
  */
 Commands.zoomResetCommand = {
   execute: function(event) {
     chrome.fileBrowserPrivate.zoom('reset');
   },
   canExecute: CommandUtil.canExecuteAlways
 };