Move yet another block of tests to manifest_version 2

chrome/test/data/extensions/api_test/management/launch_on_install/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.
 
 chrome.management.onInstalled.addListener(function(extensionInfo) {
   if (!extensionInfo.isApp) {
     console.log("Can't launch " + extensionInfo.name + " (" +
                 extensionInfo.id + "): Not an app.");
     return;
   }
   console.log("Launch " + extensionInfo.name + " (" +
               extensionInfo.id + ")");
 
   chrome.management.launchApp(extensionInfo.id, function() {
     chrome.test.sendMessage("launched app");
   });
 
 });
 
 chrome.test.sendMessage("launcher loaded");