Move a bunch of extension API tests to manifest_version 2.

chrome/test/data/extensions/api_test/apitest/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.test.runTests([
+    // TODO(battre, mkwst): add more tests.
+
+    function testAssertEq() {
+      var chromeTestFail = chrome.test.fail;
+      var messages = "";
+      chrome.test.fail = function (message) { messages += "\n" + message; };
+
+      // Check that assertEq(..., null) doesn't crash.
+      chrome.test.assertEq({test: 1}, null);
+
+      // Check that assertEq(null, ...) doesn't crash.
+      chrome.test.assertEq(null, {test: 1});
+
+      chrome.test.fail = chromeTestFail;
+      chrome.test.assertEq(
+        "\nAPI Test Error in testAssertEq" +
+        "\nActual: null" +
+        "\nExpected: {\"test\":1}" +
+        "\nAPI Test Error in testAssertEq" +
+        "\nActual: {\"test\":1}" +
+        "\nExpected: null",
+        messages);
+      chrome.test.notifyPass();
+    }
+]);