Fixes hotword nacl handler to support the new behavior.

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 64 matching lines @@
    */
   SpeechManager.prototype.onHotwordRecognizerReady_ = function(pluginManager) {
     this.pluginManager_ = pluginManager;
     this.audioManager_.addEventListener(
         'audio', pluginManager.sendAudioData.bind(pluginManager));
     if (this.shown_) {
       this.pluginManager_.startRecognizer();
       this.audioManager_.start();
       this.setState_(SpeechState.HOTWORD_RECOGNIZING);
     } else {
+      this.pluginManager_.stopRecognizer();
       this.setState_(SpeechState.READY);
     }
     chrome.send('setHotwordRecognizerState', [true]);
   };
 
   /**
    * Called when the hotword is recognized.
    *
    * @private
    */
@@ skipping 163 matching lines @@
       if (this.audioManager_.state == speech.AudioState.STOPPED)
         this.audioManager_.start();
       this.speechRecognitionManager_.start();
     }
   };
 
   return {
     SpeechManager: SpeechManager
   };
 });