|  | // Copyright 2015 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 SKY_ENGINE_TONIC_DART_GC_CONTEXT_H_ | 
|  | #define SKY_ENGINE_TONIC_DART_GC_CONTEXT_H_ | 
|  |  | 
|  | #include <unordered_map> | 
|  |  | 
|  | #include "base/macros.h" | 
|  | #include "dart/runtime/include/dart_api.h" | 
|  |  | 
|  | namespace blink { | 
|  |  | 
|  | class DartGCContext { | 
|  | public: | 
|  | DartGCContext(); | 
|  | ~DartGCContext(); | 
|  |  | 
|  | Dart_WeakReferenceSet AddToSetForRoot(const void* root, | 
|  | Dart_WeakPersistentHandle handle); | 
|  |  | 
|  | private: | 
|  | Dart_WeakReferenceSetBuilder builder_; | 
|  | std::unordered_map<const void*, Dart_WeakReferenceSet> references_; | 
|  |  | 
|  | DISALLOW_COPY_AND_ASSIGN(DartGCContext); | 
|  | }; | 
|  |  | 
|  | }  // namespace blink | 
|  |  | 
|  | #endif  // SKY_ENGINE_TONIC_DART_GC_CONTEXT_H_ |