Allows endCallbacks in tts to queue up speech in the speech queue and simplify speech output logic.

chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs

Index: chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs
diff --git a/chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs b/chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs
index 27fba15f135789f6086a2acf0b729204add6b484..9c4b435606157e79f7a48d35bf76714a5b247ee2 100644
--- a/chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs
+++ b/chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs
@@ -175,19 +175,11 @@ TEST_F('BackgroundTest', 'DISABLED_SelectSingleBasic', function() {
 
 TEST_F('BackgroundTest', 'MANUAL_ContinuousRead', function() {
   this.runWithLoadedTree(this.linksAndHeadingsDoc, function() {
-    var doCmd = this.doCmd.bind(this);
-    var expect =
-        cvox.ChromeVox.tts.expectSpeechAfter.bind(cvox.ChromeVox.tts);
-    var sendEndEvent = function() {
-        window.setTimeout(function() {
-          this.sendEndEvent();
-      }.bind(this), 0);
-    }.bind(cvox.ChromeVox.tts);
-
-    expect('start', doCmd('continuousRead'));
-    expect('alpha Link', sendEndEvent);
-    expect('beta Link', sendEndEvent);
-    expect('Heading charlie', sendEndEvent);
+    cvox.ChromeVox.tts.expectSpeech('start');
+    cvox.ChromeVox.tts.expectSpeechAfter('start', this.doCmd('continuousRead'));
+    cvox.ChromeVox.tts.expectSpeech('alpha Link');
+    cvox.ChromeVox.tts.expectSpeech('beta Link');
+    cvox.ChromeVox.tts.expectSpeech('Heading charlie', testDone);
     cvox.ChromeVox.tts.finishExpectations();
   }.bind(this));
 });