Customized font value slider to listen for both input and change event

chrome/browser/resources/options/font_settings.js

 // Copyright (c) 2012 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() {
 
   var OptionsPage = options.OptionsPage;
 
   /**
    * FontSettings class
@@ skipping 16 matching lines @@
      * Initialize the page.
      */
     initializePage: function() {
       OptionsPage.prototype.initializePage.call(this);
 
       var standardFontRange = $('standard-font-size');
       standardFontRange.valueMap = [9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20,
           22, 24, 26, 28, 30, 32, 34, 36, 40, 44, 48, 56, 64, 72];
       standardFontRange.addEventListener(
           'change', this.standardRangeChanged_.bind(this, standardFontRange));
+      standardFontRange.addEventListener(
+          'input', this.standardRangeChanged_.bind(this, standardFontRange));
       standardFontRange.customChangeHandler =
           this.standardFontSizeChanged_.bind(standardFontRange);
 
       var minimumFontRange = $('minimum-font-size');
       minimumFontRange.valueMap = [6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
           18, 20, 22, 24];
       minimumFontRange.addEventListener(
           'change', this.minimumRangeChanged_.bind(this, minimumFontRange));
+      minimumFontRange.addEventListener(
+          'input', this.minimumRangeChanged_.bind(this, minimumFontRange));
       minimumFontRange.customChangeHandler =
           this.minimumFontSizeChanged_.bind(minimumFontRange);
 
       var placeholder = loadTimeData.getString('fontSettingsPlaceholder');
       var elements = [$('standard-font-family'), $('serif-font-family'),
                       $('sans-serif-font-family'), $('fixed-font-family'),
                       $('font-encoding')];
       elements.forEach(function(el) {
         el.appendChild(new Option(placeholder));
         el.setDisabled('noFontsAvailable', true);
@@ skipping 191 matching lines @@
     $('advanced-font-settings-install').hidden = available;
     $('advanced-font-settings-options').hidden = !available;
   };
 
   // Export
   return {
     FontSettings: FontSettings
   };
 });