Use an enum for ChromeVox queue mode.

chrome/browser/resources/chromeos/chromevox/extensions/searchvox/results.js

 // Copyright 2014 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 Provides different rules for each type of result.
  */
 
 goog.provide('cvox.SearchResults');
@@ skipping 13 matching lines @@
  * Speaks a result based on given selectors.
  * @param {Element} result Search result to be spoken.
  * @param {Array} selectTexts Array of selectors or text to speak.
  */
 cvox.SearchResults.speakResultBySelectTexts = function(result, selectTexts) {
   for (var j = 0; j < selectTexts.length; j++) {
     var selectText = selectTexts[j];
     if (selectText.select) {
       var elems = result.querySelectorAll(selectText.select);
       for (var i = 0; i < elems.length; i++) {
-        cvox.ChromeVox.speakNode(elems.item(i), 1);
+        cvox.ChromeVox.speakNode(elems.item(i), cvox.QueueMode.QUEUE);
       }
     }
     if (selectText.text) {
-      cvox.ChromeVox.tts.speak(selectText.text, 1);
+      cvox.ChromeVox.tts.speak(selectText.text, cvox.QueueMode.QUEUE);
     }
   }
 };
 
 /**
  * Unknown Result Type. This is used if we don't know what to do.
  * @constructor
  * @extends {cvox.AbstractResult}
  */
 cvox.UnknownResult = function() {
@@ skipping 44 matching lines @@
     { select: SITE_LINK_SELECT },
     { select: MORE_RESULTS_SELECT },
     { select: MORE_RESULTS_LINK_SELECT }];
   cvox.SearchResults.speakResultBySelectTexts(result, NORMAL_SELECTORS);
 
   var DISCUSS_TITLE_SELECT = '.mas-1st-col div';
   var DISCUSS_DATE_SELECT = '.mas-col div';
   var discussTitles = result.querySelectorAll(DISCUSS_TITLE_SELECT);
   var discussDates = result.querySelectorAll(DISCUSS_DATE_SELECT);
   for (var i = 0; i < discussTitles.length; i++) {
-    cvox.ChromeVox.speakNode(discussTitles.item(i), 1);
-    cvox.ChromeVox.speakNode(discussDates.item(i), 1);
+    cvox.ChromeVox.speakNode(discussTitles.item(i), cvox.QueueMode.QUEUE);
+    cvox.ChromeVox.speakNode(discussDates.item(i), cvox.QueueMode.QUEUE);
   }
   return true;
 };
 
 /* Weather Result */
 /**
  * @constructor
  * @extends {cvox.AbstractResult}
  */
 cvox.WeatherResult = function() {
@@ skipping 69 matching lines @@
     { select: WEATHER_PREC_SELECT },
     { text: WEATHER_HUMID_INTRO },
     { select: WEATHER_HUMID_SELECT },
     { text: WEATHER_WIND_INTRO },
     { select: WEATHER_WIND_SELECT }
   ];
   cvox.SearchResults.speakResultBySelectTexts(result, WEATHER_SELECT_TEXTS);
 
   var WEATHER_FORCAST_CLASS = 'wob_df';
   var forecasts = result.getElementsByClassName(WEATHER_FORCAST_CLASS);
-  cvox.ChromeVox.tts.speak(FORE_INTRO, 1);
+  cvox.ChromeVox.tts.speak(FORE_INTRO, cvox.QueueMode.QUEUE);
   for (var i = 0; i < forecasts.length; i++) {
     var forecast = forecasts.item(i);
     cvox.WeatherResult.speakForecast(forecast);
   }
   return true;
 };
 
 /* Knowledge Panel Result */
 /**
  * @constructor
@@ skipping 14 matching lines @@
   return result.querySelector(KNOP_SELECT) !== null;
 };
 
 /**
  * Speak a knowledge panel search result.
  * @param {Element} result Knowledge panel result to be spoken.
  * @return {boolean} Whether or not the result was spoken.
  * @override
  */
 cvox.KnowResult.prototype.speak = function(result) {
-  cvox.ChromeVox.speakNode(result, 1);
+  cvox.ChromeVox.speakNode(result, cvox.QueueMode.QUEUE);
   return true;
 };
 
 /**
  * Extracts the wikipedia URL from knowledge panel.
  * @param {Element} result Result to extract from.
  * @return {?string} URL.
  * @override
  */
 cvox.KnowResult.prototype.getURL = function(result) {
@@ skipping 157 matching lines @@
  * @param {Element} result Category result to be spoken.
  * @return {boolean} Whether or not the result was spoken.
  * @override
  */
 cvox.CategoryResult.prototype.speak = function(result) {
   if (!result) {
     return false;
   }
   var LABEL_SELECT = '.rg_bb_label';
   var label = result.querySelector(LABEL_SELECT);
-  cvox.ChromeVox.speakNode(label, 1);
+  cvox.ChromeVox.speakNode(label, cvox.QueueMode.QUEUE);
   return true;
 };
 
 /* Ad Result */
 /**
  * @constructor
  * @extends {cvox.AbstractResult}
  */
 cvox.AdResult = function() {
 };
@@ skipping 41 matching lines @@
   cvox.UnknownResult,
   cvox.NormalResult,
   cvox.KnowResult,
   cvox.WeatherResult,
   cvox.AdResult,
   cvox.CalcResult,
   cvox.GameResult,
   cvox.ImageResult,
   cvox.CategoryResult
 ];