GlobalDictionary now stores PropertyDetails in PropertyCells.

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 21e3b3b06a051bccac2af9bc25819e8cd0e52e33..c1ffeaae6f0e95e7a480a9736d6a5bf46bbf885a 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -2892,6 +2892,7 @@ AllocationResult Heap::AllocatePropertyCell() {
   PropertyCell* cell = PropertyCell::cast(result);
   cell->set_dependent_code(DependentCode::cast(empty_fixed_array()),
                            SKIP_WRITE_BARRIER);
+  cell->set_property_details(PropertyDetails(Smi::FromInt(0)));
   cell->set_value(the_hole_value());
   return result;
 }