[heap] No leakage of objects-visiting.h outside of heap.

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index d88117819f2bf547cd8909143770988ba8b40114..671d4626924e24d45b0caced1c5f0c004de487bc 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -2037,7 +2037,7 @@ AllocationResult Heap::AllocateMap(InstanceType instance_type,
   }
   // Must be called only after |instance_type|, |instance_size| and
   // |layout_descriptor| are set.
-  map->set_visitor_id(StaticVisitorBase::GetVisitorId(map));
+  map->set_visitor_id(Heap::GetStaticVisitorIdForMap(map));
   map->set_bit_field(0);
   map->set_bit_field2(1 << Map::kIsExtensible);
   int bit_field3 = Map::EnumLengthBits::encode(kInvalidEnumCacheSentinel) |
@@ -6104,5 +6104,11 @@ bool Heap::GetObjectTypeName(size_t index, const char** object_type,
   return false;
 }
 
+
+// static
+int Heap::GetStaticVisitorIdForMap(Map* map) {
+  return StaticVisitorBase::GetVisitorId(map);
+}
+
 }  // namespace internal
 }  // namespace v8