WebUI: Fix violations of no-extra-semi lint rule.

chrome/browser/resources/chromeos/switch_access/switch_access.js

 // Copyright 2017 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.
 
 /**
  * Class to manage SwitchAccess and interact with other controllers.
  *
  * @constructor
  * @implements {SwitchAccessInterface}
  */
@@ skipping 23 matching lines @@
 
   /**
    * Handles interactions with the accessibility tree, including moving to and
    * selecting nodes.
    *
    * @private {AutomationManager}
    */
   this.automationManager_ = null;
 
   this.init_();
-};
+}
 
 SwitchAccess.prototype = {
   /**
    * Set up preferences, controllers, and event listeners.
    *
    * @private
    */
   init_: function() {
     this.switchAccessPrefs = new SwitchAccessPrefs();
     this.autoScanManager_ = new AutoScanManager(this);
@@ skipping 102 matching lines @@
   /**
    * Move to the parent of the current node if it has one.
    *
    * @override
    */
   debugMoveToParent: function() {
     if (this.automationManager_)
       this.automationManager_.debugMoveToParent();
   }
 };