ARIA state/property(aria-relevant,aria-busy) are not exposed correctly on MAC.

ui/accessibility/ax_node_data.cc

 // Copyright 2013 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 "ui/accessibility/ax_node_data.h"
 
 #include <set>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 319 matching lines @@
         break;
       case AX_ATTR_LIVE_ATOMIC:
         result += " atomic=" + value;
         break;
       case AX_ATTR_LIVE_BUSY:
         result += " busy=" + value;
         break;
       case AX_ATTR_CONTAINER_LIVE_ATOMIC:
         result += " container_atomic=" + value;
         break;
-      case AX_ATTR_CONTAINER_LIVE_BUSY:
-        result += " container_busy=" + value;
-        break;
       case AX_ATTR_ARIA_READONLY:
         result += " aria_readonly=" + value;
         break;
       case AX_ATTR_CAN_SET_VALUE:
         result += " can_set_value=" + value;
         break;
       case AX_ATTR_UPDATE_LOCATION_ONLY:
         result += " update_location_only=" + value;
         break;
       case AX_ATTR_CANVAS_HAS_FALLBACK:
@@ skipping 51 matching lines @@
     }
   }
 
   if (!child_ids.empty())
     result += " child_ids=" + IntVectorToString(child_ids);
 
   return result;
 }
 
 }  // namespace ui