Update latest ChromeVox from upstream

chrome/third_party/chromevox/chromevox/injected/mathjax.js

Index: chrome/third_party/chromevox/chromevox/injected/mathjax.js
diff --git a/chrome/third_party/chromevox/chromevox/injected/mathjax.js b/chrome/third_party/chromevox/chromevox/injected/mathjax.js
index ed2542efab40bb7da7b8db66b2bd0f8ba4f661da..aaa13adbbaba4f1ed43e99d710be77b7b3197e7e 100644
--- a/chrome/third_party/chromevox/chromevox/injected/mathjax.js
+++ b/chrome/third_party/chromevox/chromevox/injected/mathjax.js
@@ -1,21 +1,10 @@
-// Copyright 2013 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2013 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 Bridge to MathJax functions from the ChromeVox content script.
  *
- * @author sorge@google.com (Volker Sorge)
  */
 
 if (typeof(goog) != 'undefined' && goog.provide) {