AXObject is not copyable

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

 /*
  * 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 24 matching lines @@
 
 namespace blink {
 
 class AXObjectCacheImpl;
 class Element;
 class HTMLLabelElement;
 class LayoutRect;
 class Node;
 
 class MODULES_EXPORT AXNodeObject : public AXObject {
+    WTF_MAKE_NONCOPYABLE(AXNodeObject);
 protected:
     AXNodeObject(Node*, AXObjectCacheImpl&);
 
 public:
     static AXNodeObject* create(Node*, AXObjectCacheImpl&);
     ~AXNodeObject() override;
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     // Protected data.
@@ skipping 155 matching lines @@
     bool isNativeCheckboxInMixedState() const;
     String textFromDescendants(AXObjectSet& visited, bool recursive) const override;
     String nativeTextAlternative(AXObjectSet& visited, AXNameFrom&, AXRelatedObjectVector*, NameSources*, bool* foundTextAlternative) const;
     float stepValueForRange() const;
     bool isDescendantOfElementType(const HTMLQualifiedName& tagName) const;
 };
 
 } // namespace blink
 
 #endif // AXNodeObject_h