Delete the old hotwording integration.

chrome/browser/resources/app_list/start_page.js

 // Copyright 2013 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.
 
 /**
  * @fileoverview App launcher start page implementation.
  */
 
 cr.define('appList.startPage', function() {
   'use strict';
 
   // The element containing the current Google Doodle.
   var doodle = null;
 
   // TODO(calamity): This is used for manual inspection of the doodle data.
   // Remove this once http://crbug.com/462082 is diagnosed.
   var doodleData = null;
 
   /**
    * Initialize the page.
    */
   function initialize() {
     chrome.send('initialize');
   }
 
   /**
-   * Invoked when the hotword plugin availability is changed.
-   *
-   * @param {boolean} enabled Whether the plugin is enabled or not.
-   */
-  function setHotwordEnabled(enabled) {
-  }
-
-  /**
-   * Sets the architecture of NaCl module to be loaded for hotword.
-   * @param {string} arch The architecture.
-   */
-  function setNaclArch(arch) {
-  }
-
-  /**
    * Invoked when the app-list bubble is shown.
-   *
-   * @param {boolean} hotwordEnabled Whether the hotword is enabled or not.
    */
-  function onAppListShown(hotwordEnabled, legacySpeechEnabled) {
-
+  function onAppListShown() {
     chrome.send('appListShown', [this.doodle != null]);
   }
 
   /**
    * Sets the doodle's visibility, hiding or showing the default logo.
    *
    * @param {boolean} visible Whether the doodle should be made visible.
    */
   function setDoodleVisible(visible) {
     var doodle = $('doodle');
@@ skipping 57 matching lines @@
         chrome.send('doodleClicked');
         return true;
       };
       this.doodle.appendChild(doodleLink);
     } else {
       this.doodle.appendChild(doodleImage);
     }
     $('logo_container').appendChild(this.doodle);
   }
 
-  /**
-   * Invoked when the app-list bubble is hidden.
-   */
-  function onAppListHidden() {
-  }
-
-  /**
-   * Invoked when the user explicitly wants to toggle the speech recognition
-   * state.
-   */
-  function toggleSpeechRecognition() {
-  }
-
   return {
     initialize: initialize,
-    setHotwordEnabled: setHotwordEnabled,
-    setNaclArch: setNaclArch,
     onAppListDoodleUpdated: onAppListDoodleUpdated,
     onAppListShown: onAppListShown,
-    onAppListHidden: onAppListHidden,
-    toggleSpeechRecognition: toggleSpeechRecognition
   };
 });
 
 // TODO(calamity): Suppress context the menu once http://crbug.com/462082 is
 // diagnosed.
 document.addEventListener('DOMContentLoaded', appList.startPage.initialize);