Move another set of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/socket/api/background.js

Index: chrome/test/data/extensions/api_test/socket/api/background.js
===================================================================
--- chrome/test/data/extensions/api_test/socket/api/background.js	(revision 0)
+++ chrome/test/data/extensions/api_test/socket/api/background.js	(revision 0)
@@ -0,0 +1,13 @@
+// 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.test.runTests([
+  function testCreation() {
+    chrome.experimental.socket.create("udp", {},
+      function callback(socketInfo) {
+        chrome.test.assertEq(42, socketInfo.socketId);
+        chrome.test.succeed();
+      });
+  }
+]);