[api] Remove EmbedderReachableReferenceReporter

src/heap/heap.h

 // Copyright 2012 the V8 project 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 V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 1183 matching lines @@
   void RegisterExternallyReferencedObject(Object** object);
 
   void RegisterWrappersWithEmbedderHeapTracer();
 
   // In order to avoid running out of memory we force tracing wrappers if there
   // are too many of them.
   bool RequiresImmediateWrapperProcessing();
 
   EmbedderHeapTracer* embedder_heap_tracer() { return embedder_heap_tracer_; }
 
-  EmbedderReachableReferenceReporter* embedder_reachable_reference_reporter() {
-    return embedder_reference_reporter_;
-  }
-
   size_t wrappers_to_trace() { return wrappers_to_trace_.size(); }
 
   // ===========================================================================
   // External string table API. ================================================
   // ===========================================================================
 
   // Registers an external string.
   inline void RegisterExternalString(String* string);
 
   // Finalizes an external string by deleting the associated external
@@ skipping 1086 matching lines @@
   int gc_callbacks_depth_;
 
   bool deserialization_complete_;
 
   StrongRootsList* strong_roots_list_;
 
   // The depth of HeapIterator nestings.
   int heap_iterator_depth_;
 
   EmbedderHeapTracer* embedder_heap_tracer_;
-  EmbedderReachableReferenceReporter* embedder_reference_reporter_;
   std::vector<std::pair<void*, void*>> wrappers_to_trace_;
 
   // Used for testing purposes.
   bool force_oom_;
   bool delay_sweeper_tasks_for_testing_;
 
   // Classes in "heap" can be friends.
   friend class AlwaysAllocateScope;
   friend class GCCallbacksScope;
   friend class GCTracer;
@@ skipping 303 matching lines @@
   intptr_t step_size_;
   intptr_t bytes_to_next_step_;
 
  private:
   friend class LargeObjectSpace;
   friend class NewSpace;
   friend class PagedSpace;
   DISALLOW_COPY_AND_ASSIGN(AllocationObserver);
 };
 
-class TracePossibleWrapperReporter : public EmbedderReachableReferenceReporter {
- public:
-  explicit TracePossibleWrapperReporter(Heap* heap) : heap_(heap) {}
-  void ReportExternalReference(Value* object) override {
-    heap_->RegisterExternallyReferencedObject(
-        reinterpret_cast<Object**>(object));
-  }
-
- private:
-  Heap* heap_;
-};
-
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_H_