AXObject is not copyable

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 #ifndef AXRadioInput_h
 #define AXRadioInput_h
 
 #include "modules/accessibility/AXLayoutObject.h"
 
 namespace blink {
 
 class AXObjectCacheImpl;
 class HTMLInputElement;
 
 class AXRadioInput final : public AXLayoutObject {
+    WTF_MAKE_NONCOPYABLE(AXRadioInput);
 
 public:
     static AXRadioInput* create(LayoutObject*, AXObjectCacheImpl&);
     ~AXRadioInput() override { }
 
     bool isAXRadioInput() const override { return true; }
     void updatePosAndSetSize(int position = 0);
     void requestUpdateToNextNode(bool forward);
     HTMLInputElement* findFirstRadioButtonInGroup(HTMLInputElement* current) const;
 
@@ skipping 10 matching lines @@
     int m_posInSet;
     int m_setSize;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXRadioInput, isAXRadioInput());
 
 } // namespace blink
 
 #endif // AXRadioInput_h