Move yet another block of tests to manifest_version 2

chrome/test/data/extensions/api_test/page_action/add_popup/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.tabs.getSelected(null, function(tab) {
+  chrome.pageAction.show(tab.id);
+
+  // When the page action icon is clicked for the first time, add a popup.
+  chrome.pageAction.onClicked.addListener(function(tab) {
+    window.tabId = tab.id;
+
+    chrome.pageAction.setPopup({
+      tabId: tab.id,
+      popup: 'a_popup.html'
+    });
+    chrome.test.notifyPass();
+  });
+
+  chrome.test.notifyPass();
+});