Use new earcons in ChromeVox Next.

chrome/browser/resources/chromeos/chromevox/cvox2/background/background.js

Index: chrome/browser/resources/chromeos/chromevox/cvox2/background/background.js
diff --git a/chrome/browser/resources/chromeos/chromevox/cvox2/background/background.js b/chrome/browser/resources/chromeos/chromevox/cvox2/background/background.js
index 8bdf42b41fa5b5a2eca2584157bf897dc1e2320b..903e3d299c61681d829da893b8e26173f150f533 100644
--- a/chrome/browser/resources/chromeos/chromevox/cvox2/background/background.js
+++ b/chrome/browser/resources/chromeos/chromevox/cvox2/background/background.js
@@ -13,11 +13,13 @@ goog.provide('global');
 goog.require('AutomationPredicate');
 goog.require('AutomationUtil');
 goog.require('ClassicCompatibility');
+goog.require('Cvox2EarconsBackground');
 goog.require('Output');
 goog.require('Output.EventType');
 goog.require('cursors.Cursor');
 goog.require('cvox.BrailleKeyCommand');
 goog.require('cvox.ChromeVoxEditableTextBase');
+goog.require('cvox.EarconsBackground');
 goog.require('cvox.ExtensionBridge');
 goog.require('cvox.NavBraille');
 
@@ -116,6 +118,12 @@ Background = function() {
         break;
     }
   }.bind(this));
+
+  /** @type {!cvox.AbstractEarcons} @private */
+  this.classicEarcons_ = new cvox.EarconsBackground();
+
+  /** @type {!cvox.AbstractEarcons} @private */
+  this.nextEarcons_ = new Cvox2EarconsBackground();
 };
 
 Background.prototype = {
@@ -708,6 +716,12 @@ Background.prototype = {
       }
     }.bind(this));
 
+    if (mode === ChromeVoxMode.FORCE_NEXT || mode === ChromeVoxMode.NEXT) {

[Peter Lundblad, 2015/09/07 21:15:52]

I think this means that classic could play cvox2 earcons. Perhaps we shouldn't
change cvox.ChromeVox.earcons to avoid this.

[dmazzoni, 2015/09/07 23:43:04]

My intent here is that you get classic earcons in classic mode and in COMPAT
mode. You should only be in NEXT or FORCE_NEXT if you explicitly opt in, right?
Any urls we whitelist should be COMPAT.

+      cvox.ChromeVox.earcons = this.nextEarcons_;
+    } else {
+      cvox.ChromeVox.earcons = this.classicEarcons_;
+    }
+
     this.mode_ = mode;
   },