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

chrome/browser/resources/app_list/speech_manager.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 The class to Manage both offline / online speech recognition.
  */
 
 <include src="plugin_manager.js"/>
 <include src="audio_manager.js"/>
@@ skipping 82 matching lines @@
       chrome.send('search', [result]);
       this.speechRecognitionManager_.stop();
     }
   };
 
   /**
    * Called when the speech recognition has started.
    */
   SpeechManager.prototype.onSpeechRecognitionStarted = function() {
     this.setState_(SpeechState.RECOGNIZING);
+    chrome.send('setSpeechRecognitionState', [true]);
   };
 
   /**
    * Called when the speech recognition has ended.
    */
   SpeechManager.prototype.onSpeechRecognitionEnded = function() {
     // Restarts the hotword recognition.
     this.audioManager_.start();
+    chrome.send('setSpeechRecognitionState', [false]);
   };
 
   /**
    * Called when an error happened during the speech recognition.
    *
    * @param {Error} e The error object.
    */
   SpeechManager.prototype.onSpeechRecognitionError = function(e) {
     this.setState_(SpeechState.UNINITIALIZED);
   };
@@ skipping 20 matching lines @@
    */
   SpeechManager.prototype.stop = function() {
     if (this.state == SpeechState.UNINITIALIZED)
       return;
 
     this.audioManager_.stop();
     this.speechRecognitionManager_.stop();
     this.setState_(SpeechState.READY);
   };
 
+  /**
+   * Toggles the current state of speech recognition.
+   */
+  SpeechManager.prototype.toggleSpeechRecognition = function() {
+    if (this.state == SpeechState.RECOGNIZING) {
+      this.speechRecognitionManager_.stop();
+    } else {
+      this.audioManager_.stop();
+      this.speechRecognitionManager_.start();
+    }
+  };
+
   return {
     SpeechManager: SpeechManager
   };
 });