Enables the 'hotword not listening' icon in the search box.

chrome/browser/resources/app_list/speech_manager.js

Index: chrome/browser/resources/app_list/speech_manager.js
diff --git a/chrome/browser/resources/app_list/speech_manager.js b/chrome/browser/resources/app_list/speech_manager.js
index 90f099e4e5b32ab3917f31160c0673d5ca02f274..dba7c950b71d777e85002b96228ab1b7b1b3703e 100644
--- a/chrome/browser/resources/app_list/speech_manager.js
+++ b/chrome/browser/resources/app_list/speech_manager.js
@@ -22,6 +22,7 @@ cr.define('speech', function() {
     READY: 'READY',
     HOTWORD_RECOGNIZING: 'HOTWORD_RECOGNIZING',
     RECOGNIZING: 'RECOGNIZING',
+    IN_SPEECH: 'IN_SPEECH',
     STOPPING: 'STOPPING'
   };
 
@@ -39,6 +40,7 @@ cr.define('speech', function() {
           this.audioManager_.getSampleRate(),
           'chrome://app-list/okgoogle_hotword.config');
     }
+    this.shown_ = false;
     this.speechRecognitionManager_ = new speech.SpeechRecognitionManager(this);
     this.setState_(SpeechState.READY);
   }
@@ -51,6 +53,7 @@ cr.define('speech', function() {
    */
   SpeechManager.prototype.setState_ = function(newState) {
     this.state = newState;
+    chrome.send('setSpeechRecognitionState', [this.state]);
   };
 
   /**
@@ -79,7 +82,13 @@ cr.define('speech', function() {
     this.pluginManager_ = pluginManager;
     this.audioManager_.addEventListener(
         'audio', pluginManager.sendAudioData.bind(pluginManager));
-    this.setState_(SpeechState.READY);
+    if (this.shown_) {
+      this.pluginManager_.startRecognizer();
+      this.audioManager_.start();
+      this.setState_(SpeechState.HOTWORD_RECOGNIZING);
+    } else {
+      this.setState_(SpeechState.READY);
+    }
   };
 
   /**
@@ -113,7 +122,6 @@ cr.define('speech', function() {
    */
   SpeechManager.prototype.onSpeechRecognitionStarted = function() {
     this.setState_(SpeechState.RECOGNIZING);
-    chrome.send('setSpeechRecognitionState', ['on']);
   };
 
   /**
@@ -136,15 +144,15 @@ cr.define('speech', function() {
    */
   SpeechManager.prototype.onSpeechStarted = function() {
     if (this.state == SpeechState.RECOGNIZING)
-      chrome.send('setSpeechRecognitionState', ['in-speech']);
+      this.setState_(SpeechState.IN_SPEECH);
   };
 
   /**
    * Called when a speech has ended.
    */
   SpeechManager.prototype.onSpeechEnded = function() {
-    if (this.state == SpeechState.RECOGNIZING)
-      chrome.send('setSpeechRecognitionState', ['on']);
+    if (this.state == SpeechState.IN_SPEECH)
+      this.setState_(SpeechState.RECOGNIZING);
   };
 
   /**
@@ -158,9 +166,10 @@ cr.define('speech', function() {
   };
 
   /**
-   * Starts the speech recognition session.
+   * Called when the app-list bubble is shown.
    */
-  SpeechManager.prototype.start = function() {
+  SpeechManager.prototype.onShown = function() {
+    this.shown_ = true;
     if (!this.pluginManager_)
       return;
 
@@ -175,15 +184,17 @@ cr.define('speech', function() {
   };
 
   /**
-   * Stops the speech recognition session.
+   * Called when the app-list bubble is hidden.
    */
-  SpeechManager.prototype.stop = function() {
+  SpeechManager.prototype.onHidden = function() {
+    this.shown_ = false;
     if (this.pluginManager_)
       this.pluginManager_.stopRecognizer();
 
     // SpeechRecognition is asynchronous.
     this.audioManager_.stop();
-    if (this.state == SpeechState.RECOGNIZING) {
+    if (this.state == SpeechState.RECOGNIZING ||
+        this.state == SpeechState.IN_SPEECH) {
       this.setState_(SpeechState.STOPPING);
       this.speechRecognitionManager_.stop();
     } else {
@@ -195,7 +206,8 @@ cr.define('speech', function() {
    * Toggles the current state of speech recognition.
    */
   SpeechManager.prototype.toggleSpeechRecognition = function() {
-    if (this.state == SpeechState.RECOGNIZING) {
+    if (this.state == SpeechState.RECOGNIZING ||
+        this.state == SpeechState.IN_SPEECH) {
       this.audioManager_.stop();
       this.speechRecognitionManager_.stop();
     } else {