Adds the speech recognition button to the app-list searchbox.

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 48 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 app-list bubble is shown.
+   */
   function onAppListShown() {
     speechManager.start();
   }
 
+  /**
+   * Invoked when the app-list bubble is hidden.
+   */
   function onAppListHidden() {
     speechManager.stop();
   }
 
+  /**
+   * Invoked when the user explicitly wants to toggle the speech recognition
+   * state.
+   */
+  function toggleSpeechRecognition() {
+    speechManager.toggleSpeechRecognition();
+  }
+
   return {
     initialize: initialize,
     setRecommendedApps: setRecommendedApps,
     onAppListShown: onAppListShown,
-    onAppListHidden: onAppListHidden
+    onAppListHidden: onAppListHidden,
+    toggleSpeechRecognition: toggleSpeechRecognition
   };
 });
 
 document.addEventListener('contextmenu', function(e) { e.preventDefault(); });
 document.addEventListener('DOMContentLoaded', appList.startPage.initialize);