Use an enum for ChromeVox queue mode.

chrome/browser/resources/chromeos/chromevox/chromevox/injected/live_regions.js

Index: chrome/browser/resources/chromeos/chromevox/chromevox/injected/live_regions.js
diff --git a/chrome/browser/resources/chromeos/chromevox/chromevox/injected/live_regions.js b/chrome/browser/resources/chromeos/chromevox/chromevox/injected/live_regions.js
index baaa6ae3319c3880f890a611bf6d774651d87222..468fdffddcec454609445042f2061154863b0c36 100644
--- a/chrome/browser/resources/chromeos/chromevox/chromevox/injected/live_regions.js
+++ b/chrome/browser/resources/chromeos/chromevox/chromevox/injected/live_regions.js
@@ -82,14 +82,14 @@ cvox.LiveRegions.nodesAlreadyHandled = [];
 /**
  * @param {Date} pageLoadTime The time the page was loaded. Live region
  *     updates within the first INITIAL_SILENCE_MS milliseconds are ignored.
- * @param {number} queueMode Interrupt or flush.  Polite live region
+ * @param {cvox.QueueMode} queueMode Interrupt or flush.  Polite live region
  *   changes always queue.
  * @param {boolean} disableSpeak true if change announcement should be disabled.
  * @return {boolean} true if any regions announced.
  */
 cvox.LiveRegions.init = function(pageLoadTime, queueMode, disableSpeak) {
   if (queueMode == undefined) {

[Peter Lundblad, 2014/09/29 13:51:03]

This shouldn't happen if the compiler works correctly.

[dmazzoni, 2014/09/30 22:01:19]

Done.

-    queueMode = cvox.AbstractTts.QUEUE_MODE_FLUSH;
+    queueMode = cvox.QueueMode.FLUSH;
   }
 
   cvox.LiveRegions.pageLoadTime = pageLoadTime;
@@ -109,8 +109,8 @@ cvox.LiveRegions.init = function(pageLoadTime, queueMode, disableSpeak) {
         false,
         false,
         function(assertive, navDescriptions) {
-          if (!assertive && queueMode == cvox.AbstractTts.QUEUE_MODE_FLUSH) {
-            queueMode = cvox.AbstractTts.QUEUE_MODE_QUEUE;
+          if (!assertive && queueMode == cvox.QueueMode.FLUSH) {
+            queueMode = cvox.QueueMode.QUEUE;
           }
           var descSpeaker = new cvox.NavigationSpeaker();
           descSpeaker.speakDescriptionArray(navDescriptions, queueMode, null);