Move another set of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/processes/onupdated/background.js

+// Copyright (c) 2011 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.
+
+// Add a simple listener to onUpdated to ensure it does not conflict with the
+// task manager.
+chrome.experimental.processes.onUpdated.addListener(function(processes) {
+  console.log("Received update.");
+});
+
+// Add a second listener to onUpdated to ensure the task manager only hears
+// about one extension listener per process.
+chrome.experimental.processes.onUpdated.addListener(function(processes) {
+  console.log("Second listener received update.");
+});
+
+chrome.test.sendMessage("ready");