Fine tuned availability of hotword plugin.

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.
  */
 
 <include src="recommended_apps.js"/>
 <include src="speech_manager.js"/>
@@ skipping 49 matching lines @@
 
   /**
    * Sets the recommended apps.
    * @param {Array.<Object>} apps An array of app info dictionary.
    */
   function setRecommendedApps(apps) {
     $('start-page').setRecommendedApps(apps);
   }
 
   /**
-   * Invoked when the hotword plugin should be loaded.
+   * Invoked when the hotword plugin availability is changed.
+   *
+   * @param {boolean} enabled Whether the plugin is enabled or not.
    */
-  function maybeInitializePlugin() {
-    speechManager.maybeInitializePlugin();
+  function setHotwordEnabled(enabled) {
+    speechManager.setHotwordEnabled(enabled);
   }
 
   /**
    * Invoked when the app-list bubble is shown.
    */
   function onAppListShown() {
     speechManager.onShown();
   }
 
   /**
    * Invoked when the app-list bubble is hidden.
    */
   function onAppListHidden() {
     speechManager.onHidden();
   }
 
   /**
    * Invoked when the user explicitly wants to toggle the speech recognition
    * state.
    */
   function toggleSpeechRecognition() {
     speechManager.toggleSpeechRecognition();
   }
 
   return {
     initialize: initialize,
     setRecommendedApps: setRecommendedApps,
-    maybeInitializePlugin: maybeInitializePlugin,
+    setHotwordEnabled: setHotwordEnabled,
     onAppListShown: onAppListShown,
     onAppListHidden: onAppListHidden,
     toggleSpeechRecognition: toggleSpeechRecognition
   };
 });
 
 document.addEventListener('contextmenu', function(e) { e.preventDefault(); });
 document.addEventListener('DOMContentLoaded', appList.startPage.initialize);