Aria disabled does not apply to descendant elements

Source/modules/accessibility/AXObject.h

Index: Source/modules/accessibility/AXObject.h
diff --git a/Source/modules/accessibility/AXObject.h b/Source/modules/accessibility/AXObject.h
index 21061d1669ad8966f8f99bc2931fa6c7825ba2aa..ff583026bce65fb77fbb37f6ccabc97a8596f1f4 100644
--- a/Source/modules/accessibility/AXObject.h
+++ b/Source/modules/accessibility/AXObject.h
@@ -429,6 +429,8 @@ public:
     bool computeIsInertOrAriaHidden() const;
     bool isDescendantOfBarrenParent() const;
     bool computeIsDescendantOfBarrenParent() const;
+    bool isDescendantOfDisabledNode() const;
+    bool computeIsDescendantOfDisabledNode() const;
     bool lastKnownIsIgnoredValue();
     void setLastKnownIsIgnoredValue(bool);
 
@@ -649,6 +651,7 @@ protected:
     mutable bool m_cachedIsIgnored : 1;
     mutable bool m_cachedIsInertOrAriaHidden : 1;
     mutable bool m_cachedIsDescendantOfBarrenParent : 1;
+    mutable bool m_cachedIsDescendantOfDisabledNode : 1;
     mutable const AXObject* m_cachedLiveRegionRoot;
 
     AXObjectCacheImpl* m_axObjectCache;