Switch platform apps from a declarative launch container to handling an onLaunched event.

chrome/test/data/extensions/platform_apps/storage/main.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.
-
-chrome.test.runTests([
-  function testOpenDatabase() {
-    chrome.test.assertTrue(!window.openDatabase);
-    chrome.test.succeed();
-  },
-
-  function testOpenDatabaseSync() {
-    chrome.test.assertTrue(!window.openDatabaseSync);
-    chrome.test.succeed();
-  },
-
-  function testLocalStorage() {
-    chrome.test.assertTrue(!window.localStorage);
-    chrome.test.succeed();
-  }
-]);