Mark SearchEngineManagerWebUITest.testOpenSearchEngineManager as flaky.

chrome/browser/ui/webui/options/search_engine_manager_browsertest.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.
 
 /**
  * TestFixture for search engine manager WebUI testing.
  * @extends {testing.Test}
  * @constructor
  **/
 function SearchEngineManagerWebUITest() {}
 
 SearchEngineManagerWebUITest.prototype = {
   __proto__: testing.Test.prototype,
 
   /**
    * Browse to the search engine manager.
    **/
   browsePreload: 'chrome://settings/searchEngines',
 };
 
+// See crosbug.com/22673
+GEN('#if defined(OS_CHROMEOS)');
+GEN('#define MAYBE_testOpenSearchEngineManager ' +
+        'DISABLED_testOpenSearchEngineManager');
+GEN('#else');
+GEN('#define MAYBE_testOpenSearchEngineManager testOpenSearchEngineManager');
+GEN('#endif  // defined(OS_CHROMEOS)');
+
 // Test opening the search engine manager has correct location.
-TEST_F('SearchEngineManagerWebUITest', 'testOpenSearchEngineManager',
+TEST_F('SearchEngineManagerWebUITest', 'MAYBE_testOpenSearchEngineManager',
        function() {
          assertEquals(this.browsePreload, document.location.href);
        });