webui: remove the precendent for silly, invalid end of jsdoc comments, e.g.

chrome/browser/ui/webui/options/content_settings_exception_area_browsertest.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.
 
 /**
  * TestFixture for content settings exception area WebUI testing.
  * @extends {testing.Test}
  * @constructor
- **/
+ */
 function ContentSettingsExceptionAreaWebUITest() {}
 
 ContentSettingsExceptionAreaWebUITest.prototype = {
   __proto__: testing.Test.prototype,
 
   /**
    * Browse to the content settings exception area.
-   **/
+   */
   browsePreload: 'chrome://settings-frame/contentExceptions',
 };
 
 GEN('#if defined(OS_CHROMEOS)');
 GEN('#define MAYBE_testOpenContentSettingsExceptionArea ' +
         'DISABLED_testOpenContentSettingsExceptionArea');
 GEN('#else');
 GEN('#define MAYBE_testOpenContentSettingsExceptionArea ' +
         'testOpenContentSettingsExceptionArea');
 GEN('#endif  // defined(OS_CHROMEOS)');
 // Test opening the content settings exception area has correct location.
 TEST_F('ContentSettingsExceptionAreaWebUITest',
        'MAYBE_testOpenContentSettingsExceptionArea',
        function() {
          assertEquals(this.browsePreload, document.location.href);
        });