Update more extension manifests to manifest_version 2

chrome/test/data/extensions/browsertest/title_localized_pa/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.self.onConnect.addListener(function(port) {
+  port.onMessage.addListener(function(mybool) {
+    // Let Chrome know that the PageAction needs to be enabled for this tabId
+    // and for the url of this page.
+    chrome.pageAction.show(port.tab.id);
+  });
+});