[Hotword] Fix function name typo.

chrome/browser/resources/options/browser_options.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;
   var ArrayDataModel = cr.ui.ArrayDataModel;
   var RepeatingButton = cr.ui.RepeatingButton;
 
   //
@@ skipping 110 matching lines @@
 
       Preferences.getInstance().addEventListener('homepage',
           this.onHomePageChanged_.bind(this));
       Preferences.getInstance().addEventListener('homepage_is_newtabpage',
           this.onHomePageIsNtpChanged_.bind(this));
 
       $('change-home-page').onclick = function(event) {
         OptionsPage.navigateToPage('homePageOverlay');
       };
 
-      chrome.send('requestHotwordAvailabile');
+      chrome.send('requestHotwordAvailable');
 
       if ($('set-wallpaper')) {
         $('set-wallpaper').onclick = function(event) {
           chrome.send('openWallpaperManager');
         };
       }
 
       $('themes-gallery').onclick = function(event) {
         window.open(loadTimeData.getString('themesGalleryURL'));
       };
@@ skipping 1467 matching lines @@
     BrowserOptions.getLoggedInUsername = function() {
       return BrowserOptions.getInstance().username_;
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });