Convert the indexed db pyauto tests to content_browsertests.

chrome/test/data/indexeddb/shared.js

-// Copyright (c) 2012 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.
-
-window.indexedDB = window.indexedDB || window.webkitIndexedDB;
-
-function result(message) {
-  var div = document.createElement('div');
-  div.id = "result";
-  div.innerText = message;
-  document.body.appendChild(div);
-}
-
-function unexpectedErrorCallback()
-{
-  result('fail - unexpected error callback');
-}
-
-function unexpectedAbortCallback()
-{
-  result('fail - unexpected abort callback');
-}
-
-function unexpectedCompleteCallback()
-{
-  result('fail - unexpected complete callback');
-}