AXMenuListOption should respect role attribute.

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

 /*
  * 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 29 matching lines @@
 
 private:
     AXMenuListOption(HTMLOptionElement*, AXObjectCacheImpl&);
     DECLARE_VIRTUAL_TRACE();
 
     bool isMenuListOption() const override { return true; }
 
     Node* node() const override { return m_element; }
     void detach() override;
     bool isDetached() const override { return !m_element; }
-    AccessibilityRole roleValue() const override { return MenuListOptionRole; }
+    AccessibilityRole roleValue() const override;
     bool canHaveChildren() const override { return false; }
 
     Element* actionElement() const override;
     bool isEnabled() const override;
     bool isVisible() const override;
     bool isOffScreen() const override;
     bool isSelected() const override;
     void setSelected(bool) override;
     bool canSetSelectedAttribute() const override;
     LayoutRect elementRect() const override;
     String textAlternative(bool recursive, bool inAriaLabelledByTraversal, AXObjectSet& visited, AXNameFrom&, AXRelatedObjectVector*, NameSources*) const override;
     bool computeAccessibilityIsIgnored(IgnoredReasons* = nullptr) const override;
 
     RawPtrWillBeMember<HTMLOptionElement> m_element;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXMenuListOption, isMenuListOption());
 
 } // namespace blink
 
 #endif // AXMenuListOption_h