ARIA role math and HTML math element are not exposed correctly.

content/renderer/accessibility/blink_ax_enum_conversion.cc

 // Copyright (c) 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 "content/renderer/accessibility/blink_ax_enum_conversion.h"
 
 #include "base/logging.h"
 
 namespace content {
 
@@ skipping 192 matching lines @@
     case blink::WebAXRoleListMarker:
       return ui::AX_ROLE_LIST_MARKER;
     case blink::WebAXRoleLog:
       return ui::AX_ROLE_LOG;
     case blink::WebAXRoleMain:
       return ui::AX_ROLE_MAIN;
     case blink::WebAXRoleMarquee:
       return ui::AX_ROLE_MARQUEE;
     case blink::WebAXRoleMath:
       return ui::AX_ROLE_MATH;
-    case blink::WebAXRoleMathElement:
-      return ui::AX_ROLE_MATH_ELEMENT;
     case blink::WebAXRoleMatte:
       return ui::AX_ROLE_MATTE;
     case blink::WebAXRoleMenu:
       return ui::AX_ROLE_MENU;
     case blink::WebAXRoleMenuBar:
       return ui::AX_ROLE_MENU_BAR;
     case blink::WebAXRoleMenuButton:
       return ui::AX_ROLE_MENU_BUTTON;
     case blink::WebAXRoleMenuItem:
       return ui::AX_ROLE_MENU_ITEM;
@@ skipping 187 matching lines @@
     case blink::WebAXTextDirectionBT:
       return ui::AX_TEXT_DIRECTION_BT;
     default:
       NOTREACHED();
   }
 
   return ui::AX_TEXT_DIRECTION_NONE;
 }
 
 }  // namespace content