Implement an AutoLaunch experiment for Chrome for certain brand codes.

chrome/browser/resources/options/browser_options.js

 // Copyright (c) 2011 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;
   const ArrayDataModel = cr.ui.ArrayDataModel;
 
   //
   // BrowserOptions class
@@ skipping 95 matching lines @@
       // Ensure that changes are committed when closing the page.
       window.addEventListener('unload', function() {
         if (document.activeElement == homepageField)
           homepageField.blur();
       });
 
       if (!cr.isChromeOS) {
         $('defaultBrowserUseAsDefaultButton').onclick = function(event) {
           chrome.send('becomeDefaultBrowser');
         };
+
+        $('autoLaunch').addEventListener('click',
+                                         this.handleAutoLaunchChanged_);
       }
 
       var startupPagesList = $('startupPagesList');
       options.browser_options.StartupPageList.decorate(startupPagesList);
       startupPagesList.autoExpands = true;
 
       // Check if we are in the guest mode.
       if (cr.commandLine.options['--bwsi']) {
         // Hide the startup section.
         $('startupSection').hidden = true;
@@ skipping 171 matching lines @@
     setDefaultSearchEngine_: function() {
       var engineSelect = $('defaultSearchEngine');
       var selectedIndex = engineSelect.selectedIndex;
       if (selectedIndex >= 0) {
         var selection = engineSelect.options[selectedIndex];
         chrome.send('setDefaultSearchEngine', [String(selection.value)]);
       }
     },
 
     /**
+     * Set or clear whether Chrome should Auto-launch on computer startup.
+     */
+    handleAutoLaunchChanged_: function() {
+      chrome.send('toggleAutoLaunch', [Boolean($('autoLaunch').checked)]);
+    },
+
+    /**
      * Sends an asynchronous request for new autocompletion suggestions for the
      * the given query. When new suggestions are available, the C++ handler will
      * call updateAutocompleteSuggestions_.
      * @param {string} query List of autocomplete suggestions.
      * @private
      */
     requestAutocompleteSuggestions_: function(query) {
       chrome.send('requestAutocompleteSuggestions', [query]);
     },
 
     /**
      * Updates the autocomplete suggestion list with the given entries.
      * @param {Array} pages List of autocomplete suggestions.
      * @private
      */
     updateAutocompleteSuggestions_: function(suggestions) {
       var list = this.autocompleteList_;
       // If the trigger for this update was a value being selected from the
       // current list, do nothing.
       if (list.targetInput && list.selectedItem &&
           list.selectedItem['url'] == list.targetInput.value)
         return;
       list.suggestions = suggestions;
     },
+
+    /**
+      * A handler for the C++ code to call us and and let us know whether the
+      * auto-launch option should be visible and what its value should be.
+      */
+    updateAutoLaunchState_: function(enabled) {
+      $('autoLaunchOption').hidden = false;
+      $('autoLaunch').checked = enabled;
+    },
   };
 
   BrowserOptions.updateDefaultBrowserState = function(statusString, isDefault,
                                                       canBeDefault) {
     if (!cr.isChromeOS) {
       BrowserOptions.getInstance().updateDefaultBrowserState_(statusString,
                                                               isDefault,
                                                               canBeDefault);
     }
   };
 
   BrowserOptions.updateSearchEngines = function(engines, defaultValue,
                                                 defaultManaged) {
     BrowserOptions.getInstance().updateSearchEngines_(engines, defaultValue,
                                                       defaultManaged);
   };
 
   BrowserOptions.updateStartupPages = function(pages) {
     BrowserOptions.getInstance().updateStartupPages_(pages);
   };
 
   BrowserOptions.updateAutocompleteSuggestions = function(suggestions) {
     BrowserOptions.getInstance().updateAutocompleteSuggestions_(suggestions);
   };
 
+  BrowserOptions.updateAutoLaunchState = function(enabled) {
+    BrowserOptions.getInstance().updateAutoLaunchState_(enabled);
+  };
+
   BrowserOptions.setInstantFieldTrialStatus = function(enabled) {
     BrowserOptions.getInstance().setInstantFieldTrialStatus_(enabled);
   };
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 
 });