Move another set of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/settings/split_incognito/background.html

-<script>
-var api = chrome.experimental.storage;
-var assertEq = chrome.test.assertEq;
-var inIncognitoContext = chrome.extension.inIncognitoContext;
-
-['sync', 'local'].forEach(function(namespace) {
-  api[namespace].notifications = [];
-  api.onChanged.addListener(function(changes, event_namespace) {
-    if (event_namespace == namespace) {
-      changes.forEach(function(change) {
-        api[namespace].notifications.push(change);
-      });
-    }
-  });
-});
-
-// The test from C++ runs "actions", where each action is defined here.
-// This allows the test to be tightly controlled between incognito and
-// non-incognito modes.
-// Each function accepts a callback which should be run when the settings
-// operation fully completes.
-var testActions = {
-  noop: function(callback) {
-    this.get("", callback);
-  },
-  assertEmpty: function(callback) {
-    this.get(null, function(settings) {
-      chrome.test.assertEq({}, settings);
-      callback();
-    });
-  },
-  assertFoo: function(callback) {
-    this.get(null, function(settings) {
-      chrome.test.assertEq({foo: "bar"}, settings);
-      callback();
-    });
-  },
-  setFoo: function(callback) {
-    this.set({foo: "bar"}, callback);
-  },
-  removeFoo: function(callback) {
-    this.remove("foo", callback);
-  },
-  clear: function(callback) {
-    this.clear(callback);
-  },
-  assertNoNotifications: function(callback) {
-    assertEq([], this.notifications);
-    callback();
-  },
-  clearNotifications: function(callback) {
-    this.notifications.length = 0;
-    callback();
-  },
-  assertAddFooNotification: function(callback) {
-    assertEq([{ key: 'foo', newValue: 'bar' }], this.notifications);
-    callback();
-  },
-  assertDeleteFooNotification: function(callback) {
-    assertEq([{ key: 'foo', oldValue: 'bar' }], this.notifications);
-    callback();
-  }
-};
-
-// The only test we run.  Runs "actions" (as defined above) until told
-// to stop (when the message has isFinalAction set to true).
-function testEverything() {
-  function next() {
-    var waiting = inIncognitoContext ? "waiting_incognito" : "waiting";
-    chrome.test.sendMessage(waiting, function(messageJson) {
-      var message = JSON.parse(messageJson);
-      var action = testActions[message.action];
-      if (!action) {
-        chrome.test.fail("Unknown action: " + message.action);
-        return;
-      }
-      action.bind(api[message.namespace])(
-          message.isFinalAction ? chrome.test.succeed : next);
-    });
-  }
-  next();
-}
-
-chrome.test.runTests([testEverything]);
-</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>