Update more manifests to manifest_version 2

chrome/test/data/extensions/good/Extensions/bjafgdebaacbbbecmhlhpofkepfkgcpa/1.0/background.html

Index: chrome/test/data/extensions/good/Extensions/bjafgdebaacbbbecmhlhpofkepfkgcpa/1.0/background.html
===================================================================
--- chrome/test/data/extensions/good/Extensions/bjafgdebaacbbbecmhlhpofkepfkgcpa/1.0/background.html	(revision 113254)
+++ chrome/test/data/extensions/good/Extensions/bjafgdebaacbbbecmhlhpofkepfkgcpa/1.0/background.html	(working copy)
@@ -1,9 +1,6 @@
-<script>
-chrome.extension.onConnectExternal.addListener(function(port) {
-  port.onMessage.addListener(function(msg) {
-    if (msg.testConnectExternal) {
-      port.postMessage({success: true, senderId: port.sender.id});
-    }
-  });
-});
-</script>
+<!--
+ * 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.
+-->
+<script src="background.js"></script>