Move AXObjectCache::remove so it is after ContainerNode::detach

Source/modules/accessibility/AXImageMapLink.cpp

 /*
  * Copyright (C) 2008 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
@@ skipping 52 matching lines @@
     m_mapElement = nullptr;
 }
 
 PassRefPtrWillBeRawPtr<AXImageMapLink> AXImageMapLink::create(AXObjectCacheImpl& axObjectCache)
 {
     return adoptRefWillBeNoop(new AXImageMapLink(axObjectCache));
 }
 
 AXObject* AXImageMapLink::computeParent() const
 {
+    ASSERT(!isDetached());
     if (m_parent)
         return m_parent;
 
     if (!m_mapElement.get() || !m_mapElement->layoutObject())
         return 0;
 
     return axObjectCache().getOrCreate(m_mapElement->layoutObject());
 }
 
 AccessibilityRole AXImageMapLink::roleValue() const
@@ skipping 68 matching lines @@
 }
 
 DEFINE_TRACE(AXImageMapLink)
 {
     visitor->trace(m_areaElement);
     visitor->trace(m_mapElement);
     AXMockObject::trace(visitor);
 }
 
 } // namespace blink