Disable some flaky WebUI tests on Win

chrome/browser/ui/webui/options/browser_options_browsertest.js

 // Copyright (c) 2012 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.
 
 GEN_INCLUDE(['options_browsertest_base.js']);
 
 /**
  * TestFixture for browser options WebUI testing.
  * @extends {testing.Test}
  * @constructor
@@ skipping 99 matching lines @@
  */
 function AdvancedSettingsWebUITest() {}
 
 AdvancedSettingsWebUITest.prototype = {
   __proto__: OptionsBrowsertestBase.prototype,
 
   /** @override */
   browsePreload: 'chrome://settings-frame/autofill',
 };
 
-TEST_F('AdvancedSettingsWebUITest', 'testAdvancedSettingsShown', function() {
+// TODO(crbug.com/617066) Flakes on Win.
+GEN('#if defined(OS_WIN)');
+GEN('#define MAYBE_testAdvancedSettingsShown ' +
+    'DISABLED_testAdvancedSettingsShown');
+GEN('#else');
+GEN('#define MAYBE_testAdvancedSettingsShown testAdvancedSettingsShown');
+GEN('#endif');
+TEST_F('AdvancedSettingsWebUITest', 'MAYBE_testAdvancedSettingsShown',
+    function() {
   assertEquals(this.browsePreload, document.location.href);
   expectFalse($('advanced-settings').hidden);
 });