Change the copyright from Chromium OS to Chromium.

ui/file_manager/zip_archiver/unpacker-test/js/test_utils.js

-// Copyright 2015 The Chromium OS Authors. All rights reserved.
+// Copyright 2015 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';
 
 /**
  * Utility functions for all tests.
  */
 var test_utils = {
   /**
    * Forces failure in tests. Should be called only from 'beforeEach',
    * 'afterEach' and 'it'. Useful to force failures in promises.
    * @param {Object|string} An error with stack trace or a string error that
    *     describes the failure reason.
    */
   forceFailure: function(error) {
     console.error(error.stack || error);
     setTimeout(function() {
       expect(false).to.be.true;
     });
   }
 };