AXMenuListOption should respect role attribute.

third_party/WebKit/Source/modules/accessibility/AXMenuListOption.cpp

 /*
  * Copyright (C) 2010 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 31 matching lines @@
 {
     ASSERT(!m_element);
 }
 
 void AXMenuListOption::detach()
 {
     m_element = nullptr;
     AXMockObject::detach();
 }
 
+AccessibilityRole AXMenuListOption::roleValue() const
+{
+    const AtomicString& ariaRole = getAttribute(roleAttr);
+    if (ariaRole.isEmpty())
+        return MenuListOptionRole;
+
+    AccessibilityRole role = ariaRoleToWebCoreRole(ariaRole);
+    if (role)
+        return role;
+    return MenuListOptionRole;
+}
+
 Element* AXMenuListOption::actionElement() const
 {
     return m_element;
 }
 
 bool AXMenuListOption::isEnabled() const
 {
     // isDisabledFormControl() returns true if the parent <select> element is disabled,
     // which we don't want.
     return m_element && !m_element->ownElementDisabled();
@@ skipping 83 matching lines @@
 
 }
 
 DEFINE_TRACE(AXMenuListOption)
 {
     visitor->trace(m_element);
     AXMockObject::trace(visitor);
 }
 
 } // namespace blink