| // Copyright 2015 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef TRACEIMPL_OMITTED_TRACE_H_ |
| #define TRACEIMPL_OMITTED_TRACE_H_ |
| |
| #include "heap/stubs.h" |
| |
| namespace blink { |
| |
| class A : public GarbageCollected<A> { |
| public: |
| virtual void Trace(Visitor* visitor) const {} |
| }; |
| |
| class B : public A { |
| // Trace() isn't necessary because we've got nothing to trace here. |
| }; |
| |
| class C : public B { |
| public: |
| void Trace(Visitor* visitor) const override { |
| // B::Trace() is actually A::Trace(), and in certain cases we only get |
| // limited information like "there is a function call that will be resolved |
| // to A::Trace()". We still want to mark B as Traced. |
| B::Trace(visitor); |
| } |
| }; |
| |
| } |
| |
| #endif // TRACEIMPL_OMITTED_TRACE_H_ |