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 PURE_VIRTUAL_TRACE_H_ 6 #define PURE_VIRTUAL_TRACE_H_ 7 8 #include "heap/stubs.h" 9 10 namespace blink { 11 12 class A : public GarbageCollected<A> { 13 public: 14 virtual void Trace(Visitor*) = 0; 15 }; 16 17 } 18 19 #endif 20