Refactor: remove a Chromevox abstract class.

chrome/browser/resources/chromeos/chromevox/host/interface/abstract_msgs.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 Defined the convenience function cvox.Msgs.getMsg.
- */
-
-goog.provide('cvox.AbstractMsgs');
-
-
-
-/**
- * @constructor
- */
-cvox.AbstractMsgs = function() { };
-
-
-
-/**
- * Return the current locale.
- * @return {string} The locale.
- */
-cvox.AbstractMsgs.prototype.getLocale = function() { };
-
-
-/**
- * Returns the message with the given message id.
- *
- * If we can't find a message, throw an exception.  This allows us to catch
- * typos early.
- *
- * @param {string} message_id The id.
- * @param {Array.<string>=} opt_subs Substitution strings.
- * @return {string} The message.
- */
-cvox.AbstractMsgs.prototype.getMsg = function(message_id, opt_subs) {
-};
-
-
-/**
- * Retuns a number formatted correctly.
- *
- * @param {number} num The number.
- * @return {string} The number in the correct locale.
- */
-cvox.AbstractMsgs.prototype.getNumber = function(num) {
-};