MD Settings: fix collapse animation once and for all

chrome/test/data/webui/settings/cr_settings_browsertest.js

 // Copyright 2015 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.
 
 /** @fileoverview Runs the Polymer Settings tests. */
 
 /** @const {string} Path to source root. */
 var ROOT_PATH = '../../../../../';
 
 // Polymer BrowserTest fixture.
@@ skipping 667 matching lines @@
 TEST_F('CrSettingsNonExistentRouteTest', 'All', function() {
   suite('NonExistentRoutes', function() {
     test('redirect to basic', function() {
       assertEquals(settings.Route.BASIC, settings.getCurrentRoute());
       assertEquals('/', location.pathname);
     });
   });
   mocha.run();
 });
 
+// Hangs on ASAN builder for unknown reasons. TODO(michaelpg): Find reason.
+GEN('#if defined(ADDRESS_SANITIZER)');
+GEN('#define MAYBE_All DISABLED_All');
+GEN('#else');
+GEN('#define MAYBE_All All');
+GEN('#endif');
+
 /**
  * @constructor
  * @extends {SettingsPageBrowserTest}
 */
 function CrSettingsRouteDynamicParametersTest() {}
 
 CrSettingsRouteDynamicParametersTest.prototype = {
   __proto__: CrSettingsBrowserTest.prototype,
 
   /** @override */
   browsePreload: 'chrome://md-settings/people?guid=a%2Fb&foo=42',
 };
 
-TEST_F('CrSettingsRouteDynamicParametersTest', 'All', function() {
+TEST_F('CrSettingsRouteDynamicParametersTest', 'MAYBE_All', function() {
   suite('DynamicParameters', function() {
     test('get parameters from URL and navigation', function(done) {
       assertEquals(settings.Route.PEOPLE, settings.getCurrentRoute());
       assertEquals('a/b', settings.getQueryParameters().get('guid'));
       assertEquals('42', settings.getQueryParameters().get('foo'));
 
       var params = new URLSearchParams();
       params.set('bar', 'b=z');
       params.set('biz', '3');
       settings.navigateTo(settings.Route.SYNC, params);
@@ skipping 95 matching lines @@
     'test_browser_proxy.js',
     'metrics_reporting_tests.js',
   ]),
 };
 
 TEST_F('CrSettingsMetricsReportingTest', 'All', function() {
   mocha.run();
 });
 
 GEN('#endif');