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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef BASE_CLASS_MUST_DEFINE_VIRTUAL_TRACE_H_ |
| 6 #define BASE_CLASS_MUST_DEFINE_VIRTUAL_TRACE_H_ |
| 7 |
| 8 #include "heap/stubs.h" |
| 9 |
| 10 namespace blink { |
| 11 |
| 12 class PartBase { |
| 13 DISALLOW_ALLOCATION(); |
| 14 // Missing virtual trace. |
| 15 }; |
| 16 |
| 17 class PartDerived : public PartBase { |
| 18 DISALLOW_ALLOCATION(); |
| 19 public: |
| 20 virtual void trace(Visitor*); |
| 21 }; |
| 22 |
| 23 class HeapBase : public GarbageCollected<HeapBase> { |
| 24 // Missing virtual trace. |
| 25 }; |
| 26 |
| 27 |
| 28 class HeapDerived : public HeapBase { |
| 29 public: |
| 30 virtual void trace(Visitor*); |
| 31 private: |
| 32 PartDerived m_part; |
| 33 }; |
| 34 |
| 35 |
| 36 } |
| 37 |
| 38 #endif |
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