[Cleanup] Files.app: Adds missing periods at the end of the descriptions.

chrome/browser/resources/file_manager/js/metadata/function_parallel.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 steps             array of functions to invoke in parallel
- * @param callback          callback to invoke on success
- * @param failureCallback   callback to invoke on failure
+ * @param steps             array of functions to invoke in parallel.
+ * @param callback          callback to invoke on success.
+ * @param failureCallback   callback to invoke on failure.
  */
 function FunctionParallel(name, steps, logger, callback, failureCallback) {
   // Private variables hidden in closure
   this.currentStepIdx_ = -1;
   this.failed_ = false;
   this.steps_ = steps;
   this.callback_ = callback;
   this.failureCallback_ = failureCallback;
   this.logger = logger;
   this.name = name;
 
   this.remaining = this.steps_.length;
 
   this.nextStep = this.nextStep_.bind(this);
   this.onError = this.onError_.bind(this);
   this.apply = this.start.bind(this);
 }
 
 
 /**
  * Error handling function, which fires error callback.
  *
- * @param err error message
+ * @param err error message.
  */
 FunctionParallel.prototype.onError_ = function(err) {
   if (!this.failed_) {
     this.failed_ = true;
     this.failureCallback_(err);
   }
 };
 
 /**
  * Advances to next step. This method should not be used externally. In external
@@ skipping 20 matching lines @@
   }
   for (var i=0; i < this.steps_.length; i++) {
     this.logger.vlog('Attempting to start step [' + this.steps_[i].name + ']');
     try {
       this.steps_[i].apply(this, arguments);
     } catch(e) {
       this.onError(e.toString());
     }
   }
 };