Move another set of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/storage/tab.html

-<script>
-chrome.test.runTests([function tab() {
-  // Check that the localstorage stuff we stored is still there.
-  chrome.test.assertTrue(localStorage.foo == "bar");
-
-  // Check that the database stuff we stored is still there.
-  try {
-    console.log("Opening database...");
-    var db = window.openDatabase("mydb2", "1.0", "database test", 2048);
-    console.log("DONE opening database");
-  } catch (err) {
-    console.log("Exception");
-    console.log(err.message);
-  }
-  if (!db)
-    chrome.test.fail("failed to open database");
-
-  console.log("Performing transaction...");
-  db.transaction(function(tx) {
-    tx.executeSql("select body from note", [], function(tx, results) {
-      chrome.test.assertTrue(results.rows.length == 1);
-      chrome.test.assertTrue(results.rows.item(0).body == "hotdog");
-      chrome.test.succeed();
-    }, function(tx, error) {
-      chrome.test.fail(error.message);
-    });
-  }, function(error) {
-    chrome.test.fail(error.message);
-  });
-}]);
-</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="tab.js"></script>