| // 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_REQUIRES_TRACING_H_ |
| #define BASE_REQUIRES_TRACING_H_ |
| |
| #include "heap/stubs.h" |
| |
| namespace blink { |
| |
| class A : public GarbageCollected<A> { |
| public: |
| virtual void trace(Visitor*); |
| }; |
| |
| class B : public A { |
| // Does not need trace |
| }; |
| |
| class C : public B { |
| public: |
| void trace(Visitor*); |
| private: |
| Member<A> m_a; |
| }; |
| |
| class D : public C { |
| public: |
| void trace(Visitor*); |
| private: |
| Member<A> m_a; |
| }; |
| |
| } |
| |
| #endif |