Refactor: remove a Chromevox abstract class.

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

Index: chrome/browser/resources/chromeos/chromevox/chromevox/background/background.js
diff --git a/chrome/browser/resources/chromeos/chromevox/chromevox/background/background.js b/chrome/browser/resources/chromeos/chromevox/chromevox/background/background.js
index e48f380d0e3b184ab828c19dca75ad4806a96074..c6730e45324b7defac1d0aab02cc2f9393fc98bb 100644
--- a/chrome/browser/resources/chromeos/chromevox/chromevox/background/background.js
+++ b/chrome/browser/resources/chromeos/chromevox/chromevox/background/background.js
@@ -13,7 +13,6 @@ goog.require('cvox.AbstractEarcons');
 goog.require('cvox.AccessibilityApiHandler');
 goog.require('cvox.BrailleBackground');
 goog.require('cvox.BrailleCaptionsBackground');
-goog.require('cvox.ChromeMsgs');
 goog.require('cvox.ChromeVox');
 goog.require('cvox.ChromeVoxEditableTextBase');
 goog.require('cvox.ChromeVoxPrefs');
@@ -23,6 +22,7 @@ goog.require('cvox.EarconsBackground');
 goog.require('cvox.ExtensionBridge');
 goog.require('cvox.HostFactory');
 goog.require('cvox.InjectedScriptLoader');
+goog.require('cvox.Msgs');
 goog.require('cvox.NavBraille');
 // TODO(dtseng): This is required to prevent Closure from stripping our export
 // prefs on window.
@@ -56,7 +56,7 @@ cvox.ChromeVoxBackground.prototype.init = function() {
     return;
   }
 
-  cvox.ChromeVox.msgs = cvox.HostFactory.getMsgs();
+  cvox.ChromeVox.msgs = new cvox.Msgs();
   this.prefs = new cvox.ChromeVoxPrefs();
   this.readPrefs();