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

chrome/browser/resources/chromeos/chromevox/common/dom_util.js

 // 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.
 
 /**
  * @fileoverview A collection of JavaScript utilities used to simplify working
  * with the DOM.
  */
 
 
@@ skipping 2470 matching lines @@
  */
 cvox.DomUtil.isMathJax = function(node) {
   if (!node || !node.tagName || !node.className) {
     return false;
   }
 
   function isSpanWithClass(n, cl) {
     return (n.tagName == 'SPAN' &&
             n.className.split(' ').some(function(x) {
                                           return x.toLowerCase() == cl;}));
-  };
+  }
   if (isSpanWithClass(node, 'math')) {
     var ancestors = cvox.DomUtil.getAncestors(node);
     return ancestors.some(function(x) {return isSpanWithClass(x, 'mathjax');});
   }
   return false;
 };
 
 
 /**
  * Computes the id of the math span in a MathJax DOM element.
@@ skipping 99 matching lines @@
         var describedNode = document.getElementById(describedById);
         if (describedNode) {
           desc += ' ' + cvox.DomUtil.getName(
               describedNode, true, true, true);
         }
       }
     }
   }
   return desc;
 };