// Copyright 2014 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. | |
#include "base_requires_tracing.h" | |
namespace blink { | |
void A::Trace(Visitor* visitor) const {} | |
void C::Trace(Visitor* visitor) const { | |
visitor->Trace(m_a); | |
// Missing B::trace(visitor) | |
} | |
void D::Trace(Visitor* visitor) const { | |
visitor->Trace(m_a); | |
C::Trace(visitor); | |
} | |
} |