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

chrome/browser/resources/chromeos/switch_access/automation_predicate.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 containing predicates for the chrome automation API. Each predicate
  * can be run on one or more AutomationNodes and returns a boolean value.
  *
  * @constructor
  */
-function AutomationPredicate() {};
+function AutomationPredicate() {}
 
 /**
  * Returns true if |node| is a subtreeLeaf, meaning that |node| is either
  * interesting or a group (both defined below).
  *
  * @param {!chrome.automation.AutomationNode} node
  * @param {!chrome.automation.AutomationNode} scope
  * @return {boolean}
  */
 AutomationPredicate.isSubtreeLeaf = function(node, scope) {
@@ skipping 94 matching lines @@
     // Work around for browser tabs
     if (role === chrome.automation.RoleType.TAB
         && parent.role === chrome.automation.RoleType.TAB_LIST
         && root.role === chrome.automation.RoleType.DESKTOP)
       return true;
   }
 
   // The general rule that applies to everything.
   return state[chrome.automation.StateType.FOCUSABLE] === true;
 }