Revert 89626 - Support automatic javascript test registry in gtest when creating WebUI tests.

chrome/test/data/webui/sample_pass.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.
-
-// Sample tests that exercise the test JS library and show how this framework
-// could be used to test the downloads page.
-var helper = {
-  helpFunc: function helpFunc() {
-    assertTrue(true);
-  }
-};
-
-function testAssertFalse() {
-  assertFalse(false);
-}
-
-function testHelper() {
-  helper.helpFunc(false);
-}
-
-function testAssertTrue() {
-  assertTrue(true);
-}
-
-function testAssertEquals() {
-  assertEquals(5, 5, "fives");
-}