Support basic reading of focus for both desktop and tabs trees.

chrome/browser/resources/chromeos/chromevox/testing/chromevox_e2e_test.js

 // Copyright 2014 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.
 
-// Include test fixture.
-GEN_INCLUDE(['../../../chromevox/testing/chromevox_unittest_base.js']);
+/**
+ * Base test fixture for ChromeVox end to end tests.
+ *
+ * These tests run against production ChromeVox inside of the extension's
+ * background page context.
+ * @constructor
+ */
+function ChromeVoxE2ETest() {}
 
-/**
- * Test fixture for cvox2.Background.
- * @constructor
- * @extends {ChromeVoxUnitTestBase}
- */
-function BackgroundTest() {}
+ChromeVoxE2ETest.prototype = {
+  __proto__: testing.Test.prototype,
 
-BackgroundTest.prototype = {
-  __proto__: ChromeVoxUnitTestBase.prototype,
+  /**
+   * @override
+   * No UI in the background context.
+   */
+  runAccessibilityChecks: false,
+
+  /** @override */
+  isAsync: true,
 
   /** @override */
   browsePreload: null,
 
   /** @override */
   testGenCppIncludes: function() {
     GEN_BLOCK(function() {/*!
 #include "ash/accessibility_delegate.h"
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 13 matching lines @@
   base::Closure load_cb =
       base::Bind(&chromeos::AccessibilityManager::EnableSpokenFeedback,
           base::Unretained(chromeos::AccessibilityManager::Get()),
           true,
           ash::A11Y_NOTIFICATION_NONE);
   WaitForExtension(extension_misc::kChromeVoxExtensionId, load_cb);
     */});
   }
 };
 
-/** Tests ChromeVox classic is in this context. */
-TEST_F('BackgroundTest', 'ClassicNamespaces', function() {
-  assertEquals('object', typeof(cvox));
-  assertEquals('function', typeof(cvox.ChromeVoxBackground));
-});
+/**
+ * Similar to |TEST_F|. Generates a test for the given |testFixture|,
+ * |testName|, and |testFunction|.
+ * Used this variant when an |isAsync| fixture wants to temporarily mix in an
+ * sync test.
+ * @param {string} testFixture Fixture name.
+ * @param {string} testName Test name.
+ * @param {function} testFunction The test impl.
+ */
+function SYNC_TEST_F(testFixture, testName, testFunction) {
+  var wrappedTestFunction = function() {
+    testFunction();
+    testDone([true, '']);
+  };
+  TEST_F(testFixture, testName, wrappedTestFunction);
+}