Revert of Correctly compute parent of AXMenuListOption (patchset #8 id:160001 of https://codereview…

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 36 matching lines @@
   AXMenuListOption(HTMLOptionElement*, AXObjectCacheImpl&);
   DECLARE_VIRTUAL_TRACE();
 
   bool isMenuListOption() const override { return true; }
 
   Node* getNode() const override { return m_element; }
   void detach() override;
   bool isDetached() const override { return !m_element; }
   AccessibilityRole roleValue() const override;
   bool canHaveChildren() const override { return false; }
-  AXObject* computeParent() const override;
 
   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;
   void getRelativeBounds(AXObject** outContainer,
                          FloatRect& outBoundsInContainer,
                          SkMatrix44& outContainerTransform) const override;
   String textAlternative(bool recursive,
                          bool inAriaLabelledByTraversal,
                          AXObjectSet& visited,
                          AXNameFrom&,
                          AXRelatedObjectVector*,
                          NameSources*) const override;
   bool computeAccessibilityIsIgnored(IgnoredReasons* = nullptr) const override;
 
   Member<HTMLOptionElement> m_element;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXMenuListOption, isMenuListOption());
 
 }  // namespace blink
 
 #endif  // AXMenuListOption_h