[uber page] Cleaning up some nits I found while mucking around in options2.

chrome/browser/resources/options2/certificate_backup_overlay.js

 // Copyright (c) 2010 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.
 
 cr.define('options', function() {
   const OptionsPage = options.OptionsPage;
 
   /**
    * CertificateBackupOverlay class
    * Encapsulated handling of the 'enter backup password' overlay page.
@@ skipping 12 matching lines @@
 
     /**
      * Initializes the page.
      */
     initializePage: function() {
       OptionsPage.prototype.initializePage.call(this);
 
       var self = this;
       $('certificateBackupCancelButton').onclick = function(event) {
         self.cancelBackup_();
-      }
+      };
       $('certificateBackupOkButton').onclick = function(event) {
         self.finishBackup_();
-      }
-      $('certificateBackupPassword').oninput =
-      $('certificateBackupPassword2').oninput = function(event) {
+      };
+      var onBackupPasswordInput = function(event) {
         self.comparePasswords_();
-      }
+      };
+      $('certificateBackupPassword').oninput = onBackupPasswordInput;
+      $('certificateBackupPassword2').oninput = onBackupPasswordInput;
 
       self.clearInputFields_();
     },
 
     /**
      * Clears any uncommitted input, and dismisses the overlay.
      * @private
      */
     dismissOverlay_: function() {
       this.clearInputFields_();
@@ skipping 56 matching lines @@
 
   CertificateBackupOverlay.dismiss = function() {
     CertificateBackupOverlay.getInstance().dismissOverlay_();
   };
 
   // Export
   return {
     CertificateBackupOverlay: CertificateBackupOverlay
   };
 });