Native text field elements shouldn't allow aria-owns children.

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

 /*
  * Copyright (C) 2012, Google 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
@@ skipping 2170 matching lines @@
     if (ignoredStatus != accessibilityIsIgnored())
         childrenChanged();
 }
 
 void AXNodeObject::computeAriaOwnsChildren(HeapVector<Member<AXObject>>& ownedChildren) const
 {
     if (!hasAttribute(aria_ownsAttr))
         return;
 
     Vector<String> idVector;
-    if (canHaveChildren())
+    if (canHaveChildren() && !isNativeTextControl() && !hasContentEditableAttributeSet())
         tokenVectorFromAttribute(idVector, aria_ownsAttr);
 
     axObjectCache().updateAriaOwns(this, idVector, ownedChildren);
 }
 
 // Based on http://rawgit.com/w3c/aria/master/html-aam/html-aam.html#accessible-name-and-description-calculation
 String AXNodeObject::nativeTextAlternative(AXObjectSet& visited, AXNameFrom& nameFrom, AXRelatedObjectVector* relatedObjects, NameSources* nameSources, bool* foundTextAlternative) const
 {
     if (!getNode())
         return String();
@@ skipping 631 matching lines @@
     return placeholder;
 }
 
 DEFINE_TRACE(AXNodeObject)
 {
     visitor->trace(m_node);
     AXObject::trace(visitor);
 }
 
 } // namespace blink