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

chrome/browser/resources/chromeos/chromevox/chromevox/injected/keyboard_handler.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.
 
 goog.provide('cvox.ChromeVoxKbHandler');
 
 goog.require('cvox.ChromeVox');
 goog.require('cvox.KeyMap');
 goog.require('cvox.KeySequence');
 goog.require('cvox.KeyUtil');
@@ skipping 55 matching lines @@
   function compareKeyStr(a, b) {
     // Compare the lengths of the key bindings.
     if (a[0].length < b[0].length) {
       return -1;
     } else if (b[0].length < a[0].length) {
       return 1;
     } else {
       // The keys are the same length. Sort lexicographically.
       return a[0].localeCompare(b[0]);
     }
-  };
+  }
 
   sortingArray.sort(compareKeyStr);
   return sortingArray;
 };
 
 
 /**
  * Handles key down events.
  *
  * @param {Event} evt The key down event to process.
@@ skipping 35 matching lines @@
     returnValue = false;
   }
 
   // If the whole document is hidden from screen readers, let the app
   // catch keys as well.
   if (cvox.ChromeVox.entireDocumentIsHidden) {
     returnValue = true;
   }
   return returnValue;
 };