[Cleanup] Files.app: Fill missing type annotation in @param tag.

chrome/browser/resources/file_manager/js/metadata/function_sequence.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.
 
 /**
  * @constructor
  * @class FunctionSequence to invoke steps in sequence
  *
  * @param {string} name                //TODO(JSDOC).
  * @param {Array} steps                array of functions to invoke in sequence.
@@ skipping 33 matching lines @@
  */
 FunctionSequence.prototype.setFailureCallback = function(failureCallback) {
     this.failureCallback_ = failureCallback;
 };
 
 
 /**
  * Error handling function, which traces current error step, stops sequence
  * advancing and fires error callback.
  *
+ * @param {string} err Error message
  * @private
- * @param err error message.
  */
 FunctionSequence.prototype.onError_ = function(err) {
   this.logger.vlog('Failed step: ' + this.steps_[this.currentStepIdx_].name +
                    ': ' + err);
   if (!this.failed_) {
     this.failed_ = true;
     this.failureCallback_(err);
   }
 };
 
@@ skipping 56 matching lines @@
 
 /**
  * Add Function object mimics to FunctionSequence
  * @private
  * @param {*} obj  //TODO(JSDOC).
  * @param {Array.*} args  /TODO(JSDOC).
  */
 FunctionSequence.prototype.apply_ = function(obj, args) {
   this.start.apply(this, args);
 };