Correctly map list markers to a specific role rather than a generic group on Mac.

chrome/browser/accessibility/accessibility_win_browsertest.cc

 // 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.
 
 #include <atlbase.h>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/scoped_comptr.h"
@@ skipping 428 matching lines @@
       content::NotificationService::AllSources());
   GURL tree_url("data:text/html,<ul tabindex='-1' role='radiogroup'><li id='li'"
       ">li</li></ul>");
   browser()->OpenURL(OpenURLParams(
       tree_url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED,
       false));
   GetRendererAccessible();
   tree_updated_observer1.Wait();
 
   // Check the browser's copy of the renderer accessibility tree.
-  AccessibleChecker list_marker_checker(L"", ROLE_SYSTEM_TEXT, L"\x2022");
+  AccessibleChecker list_marker_checker(L"\x2022", ROLE_SYSTEM_TEXT, L"");
   AccessibleChecker static_text_checker(L"li", ROLE_SYSTEM_TEXT, L"");
   AccessibleChecker list_item_checker(L"", ROLE_SYSTEM_LISTITEM, L"");
   list_item_checker.SetExpectedState(
       STATE_SYSTEM_READONLY);
   AccessibleChecker radio_group_checker(L"", ROLE_SYSTEM_GROUPING,
       IA2_ROLE_SECTION, L"");
   radio_group_checker.SetExpectedState(STATE_SYSTEM_FOCUSABLE);
   AccessibleChecker document_checker(L"", ROLE_SYSTEM_DOCUMENT, L"");
   list_item_checker.AppendExpectedChild(&list_marker_checker);
   list_item_checker.AppendExpectedChild(&static_text_checker);
@@ skipping 415 matching lines @@
 
   // Check the browser's copy of the renderer accessibility tree.
   AccessibleChecker grouping1_checker(L"", ROLE_SYSTEM_GROUPING, L"");
   AccessibleChecker grouping2_checker(L"", ROLE_SYSTEM_GROUPING, L"");
   AccessibleChecker document_checker(L"", ROLE_SYSTEM_DOCUMENT, L"");
   document_checker.AppendExpectedChild(&grouping1_checker);
   document_checker.AppendExpectedChild(&grouping2_checker);
   document_checker.CheckAccessible(GetRendererAccessible());
 }
 }  // namespace.