Fix copyright line on hotword extension files.

chrome/browser/resources/hotword/nacl_manager.js

-// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Copyright 2014 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.
 
 cr.define('hotword', function() {
 'use strict';
 
 /**
  * Class used to manage the state of the NaCl recognizer plugin. Handles all
  * control of the NaCl plugin, including creation, start, stop, trigger, and
  * shutdown.
@@ skipping 417 matching lines @@
         break;
     }
   }
 };
 
 return {
   NaClManager: NaClManager
 };
 
 });