IndexedDB: Stop using webkit-prefixed versions of APIs in tests

content/test/data/indexeddb/transaction_test.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.
 
 function finalTransactionCompleted()
 {
   debug('The final transaction completed.');
   done();
 }
 
@@ skipping 51 matching lines @@
 {
   // We are now in a set version transaction.
   window.db = event.target.result;
   debug('Creating object store.');
   deleteAllObjectStores(db);
   db.createObjectStore('employees', {keyPath: 'id'});
 }
 
 function test()
 {
-  if ('webkitIndexedDB' in window) {
-    indexedDB = webkitIndexedDB;
-    IDBCursor = webkitIDBCursor;
-    IDBKeyRange = webkitIDBKeyRange;
-    IDBTransaction = webkitIDBTransaction;
-  }
   indexedDBTest(onSetVersion, onSetVersionComplete);
 }