Hotword Audio Verification app: control the hotword settings

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.exportPath('options');
 
 /**
  * @typedef {{actionLinkText: (string|undefined),
  *            hasError: (boolean|undefined),
  *            hasUnrecoverableError: (boolean|undefined),
@@ skipping 214 matching lines @@
       chrome.send('requestHotwordAvailable');
 
       if ($('set-wallpaper')) {
         $('set-wallpaper').onclick = function(event) {
           chrome.send('openWallpaperManager');
           chrome.send('coreOptionsUserMetricsAction',
                       ['Options_OpenWallpaperManager']);
         };
       }
 
+      // Control the hotword-always-on pref with the Hotword Audio
+      // Verification app.
+      $('hotword-always-on-search-checkbox').customChangeHandler =
+          function(event) {
+        if (!$('hotword-always-on-search-checkbox').checked)
+          return false;
+
+        $('hotword-always-on-search-checkbox').checked = false;
+        chrome.send('launchHotwordAudioVerificationApp', [false]);
+        return true;
+      };
+
       $('themes-gallery').onclick = function(event) {
         window.open(loadTimeData.getString('themesGalleryURL'));
         chrome.send('coreOptionsUserMetricsAction',
                     ['Options_ThemesGallery']);
       };
       $('themes-reset').onclick = function(event) {
         chrome.send('themesReset');
       };
 
       if (loadTimeData.getBoolean('profileIsSupervised')) {
@@ skipping 1801 matching lines @@
       }
       button.textContent = loadTimeData.getString(strId);
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });