Move another block of extension tests to manifest_version 2.

chrome/test/data/extensions/api_test/lazy_background_page/broadcast_event/background.js

Index: chrome/test/data/extensions/api_test/lazy_background_page/broadcast_event/background.js
===================================================================
--- chrome/test/data/extensions/api_test/lazy_background_page/broadcast_event/background.js	(revision 0)
+++ chrome/test/data/extensions/api_test/lazy_background_page/broadcast_event/background.js	(revision 0)
@@ -0,0 +1,11 @@
+// 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.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) {
+  // TODO: look for 'stegosaurus' in the page contents.
+  if (tab.url.search("stegosaurus") > -1)
+    chrome.pageAction.show(tabId);
+  else
+    chrome.pageAction.hide(tabId);
+});