| // 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. |
| |
| #ifndef BASE_CLASS_MUST_DEFINE_VIRTUAL_TRACE_H_ |
| #define BASE_CLASS_MUST_DEFINE_VIRTUAL_TRACE_H_ |
| |
| #include "heap/stubs.h" |
| |
| namespace blink { |
| |
| class PartBase { |
| DISALLOW_ALLOCATION(); |
| // Missing virtual trace. |
| }; |
| |
| class PartDerived : public PartBase { |
| DISALLOW_ALLOCATION(); |
| public: |
| virtual void trace(Visitor*); |
| }; |
| |
| class HeapBase : public GarbageCollected<HeapBase> { |
| // Missing virtual trace. |
| }; |
| |
| |
| class HeapDerived : public HeapBase { |
| public: |
| virtual void trace(Visitor*); |
| private: |
| PartDerived m_part; |
| }; |
| |
| |
| } |
| |
| #endif |