Delete all uses of SpeechManager from the app list start page.

Constructing the SpeechManager creates a WebAudio instance which creates
an audio output stream that prevents ChromeOS from suspending. This
code is supposed to be dead and is slated for removal. This change gets
rid of the usage and is intended to be mergable into the M42 branch.

BUG=450081

Review URL: https://codereview.chromium.org/966983003

Cr-Commit-Position: refs/heads/master@{#318969}

chrome/browser/resources/app_list/start_page.js

@@ -6,13 +6,9 @@
  * @fileoverview App launcher start page implementation.
  */
 
-<include src="speech_manager.js">
-
 cr.define('appList.startPage', function() {
   'use strict';
 
-  var speechManager = null;
-
   // The element containing the current Google Doodle.
   var doodle = null;
 
@@ -24,7 +20,6 @@ cr.define('appList.startPage', function() {
    * Initialize the page.
    */
   function initialize() {
-    speechManager = new speech.SpeechManager();
     chrome.send('initialize');
   }
 
@@ -34,7 +29,6 @@ cr.define('appList.startPage', function() {
    * @param {boolean} enabled Whether the plugin is enabled or not.
    */
   function setHotwordEnabled(enabled) {
-    speechManager.setHotwordEnabled(enabled);
   }
 
   /**
@@ -42,7 +36,6 @@ cr.define('appList.startPage', function() {
    * @param {string} arch The architecture.
    */
   function setNaclArch(arch) {
-    speechManager.setNaclArch(arch);
   }
 
   /**
@@ -51,8 +44,6 @@ cr.define('appList.startPage', function() {
    * @param {boolean} hotwordEnabled Whether the hotword is enabled or not.
    */
   function onAppListShown(hotwordEnabled, legacySpeechEnabled) {
-    if (legacySpeechEnabled)
-      speechManager.onShown(hotwordEnabled);
 
     chrome.send('appListShown', [this.doodle != null]);
   }
@@ -135,7 +126,6 @@ cr.define('appList.startPage', function() {
    * Invoked when the app-list bubble is hidden.
    */
   function onAppListHidden() {
-    speechManager.onHidden();
   }
 
   /**
@@ -143,7 +133,6 @@ cr.define('appList.startPage', function() {
    * state.
    */
   function toggleSpeechRecognition() {
-    speechManager.toggleSpeechRecognition();
   }
 
   return {

chrome/browser/ui/webui/app_list/start_page_browsertest.js

@@ -159,58 +159,3 @@ TEST_F('AppListStartPageWebUITest', 'LoadDoodle', function() {
                                            'http://example.com/');
   assertEquals(null, $('doodle'));
 });
-
-TEST_F('AppListStartPageWebUITest', 'SpeechRecognitionState', function() {
-  this.mockHandler.expects(once()).setSpeechRecognitionState('READY');
-  appList.startPage.onAppListShown(false, true);
-  this.mockHandler.expects(once()).setSpeechRecognitionState('RECOGNIZING');
-  appList.startPage.toggleSpeechRecognition();
-  Mock4JS.verifyAllMocks();
-  Mock4JS.clearMocksToVerify();
-
-  this.mockHandler.expects(once()).setSpeechRecognitionState('READY');
-  for (var i = 0; i < this.audioTrackMocks.length; ++i) {
-    this.audioTrackMocks[i].expects(once()).stop();
-  }
-  appList.startPage.toggleSpeechRecognition();
-  Mock4JS.verifyAllMocks();
-  Mock4JS.clearMocksToVerify();
-
-  this.mockHandler.expects(once()).setSpeechRecognitionState('RECOGNIZING');
-  appList.startPage.toggleSpeechRecognition();
-  Mock4JS.verifyAllMocks();
-  Mock4JS.clearMocksToVerify();
-
-  this.mockHandler.expects(once()).setSpeechRecognitionState('STOPPING');
-  this.mockHandler.expects(once()).setSpeechRecognitionState('READY');
-  for (var i = 0; i < this.audioTrackMocks.length; ++i) {
-    this.audioTrackMocks[i].expects(once()).stop();
-  }
-  appList.startPage.onAppListHidden();
-});
-
-TEST_F('AppListStartPageWebUITest', 'SpeechRecognition', function() {
-  this.mockHandler.expects(once()).setSpeechRecognitionState('READY');
-  appList.startPage.onAppListShown(false, true);
-  this.mockHandler.expects(once()).setSpeechRecognitionState('RECOGNIZING');
-  appList.startPage.toggleSpeechRecognition();
-  Mock4JS.verifyAllMocks();
-  Mock4JS.clearMocksToVerify();
-
-  this.mockHandler.expects(once()).setSpeechRecognitionState('IN_SPEECH');
-  this.speechRecognizer.onspeechstart();
-  Mock4JS.verifyAllMocks();
-  Mock4JS.clearMocksToVerify();
-
-  this.mockHandler.expects(once()).speechResult('test,false');
-  this.sendSpeechResult('test', false);
-  Mock4JS.verifyAllMocks();
-  Mock4JS.clearMocksToVerify();
-
-  this.mockHandler.expects(once()).speechResult('test,true');
-  this.mockHandler.expects(once()).setSpeechRecognitionState('READY');
-  for (var i = 0; i < this.audioTrackMocks.length; ++i) {
-    this.audioTrackMocks[i].expects(once()).stop();
-  }
-  this.sendSpeechResult('test', true);
-});