[MD settings] css for row separator

chrome/test/data/webui/settings/appearance_page_test.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.
 
 /**
  * @constructor
  * @implements {settings.AppearanceBrowserProxy}
  * @extends {settings.TestBrowserProxy}
  */
 var TestAppearanceBrowserProxy = function() {
@@ skipping 163 matching lines @@
       // The "USE GTK+" button shouldn't be showing if it's already in use.
       assertFalse(!!appearancePage.$$('#useSystem'));
 
       appearanceBrowserProxy.setIsSupervised(true);
       appearancePage.set(USE_SYSTEM_PREF, false);
       Polymer.dom.flush();
       // Supervised users have their own theme and can't use GTK+ theme.
       assertFalse(!!appearancePage.$$('#useDefault'));
       assertFalse(!!appearancePage.$$('#useSystem'));
       // If there's no "USE" buttons, the container should be hidden.
-      assertTrue(appearancePage.$$('.secondary-action').hidden);
+      assertTrue(appearancePage.$$('#themesSecondaryActions').hidden);
 
       appearanceBrowserProxy.setIsSupervised(false);
       appearancePage.set(THEME_ID_PREF, 'fake theme id');
       Polymer.dom.flush();
       // If there's "USE" buttons again, the container should be visible.
       assertTrue(!!appearancePage.$$('#useDefault'));
-      assertFalse(appearancePage.$$('.secondary-action').hidden);
+      assertFalse(appearancePage.$$('#themesSecondaryActions').hidden);
 
       var button = appearancePage.$$('#useSystem');
       assertTrue(!!button);
 
       MockInteractions.tap(button);
       return appearanceBrowserProxy.whenCalled('useSystemTheme');
     });
   } else {
     test('useDefaultTheme', function() {
       assertFalse(!!appearancePage.get(THEME_ID_PREF));
@@ skipping 81 matching lines @@
           assertEquals(homeUrlInput.value, '@@@');  // Value hasn't changed.
           assertTrue(homeUrlInput.invalid);
 
           // Should reset to default value on change event.
           homeUrlInput.$.input.fire('change');
           Polymer.dom.flush();
           assertEquals(homeUrlInput.value, 'test');
         });
   });
 });