File: non_virtual_trace.h

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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NON_VIRTUAL_TRACE_H_
#define NON_VIRTUAL_TRACE_H_

#include "heap/stubs.h"

namespace blink {

class A : public GarbageCollected<A> {
public:
 void Trace(Visitor*) const;
};

class B : public A {
};

class C : public B {
public:
 void Trace(Visitor*) const;  // Cannot override a non-virtual Trace.
};

class D : public B {
public:
 virtual void Trace(Visitor*) const;  // Cannot override a non-virtual Trace.
};

}

#endif