CopyDropDescriptors 4168 src/heap.cc      { MaybeObject* maybe_map = map->CopyDropDescriptors();
CopyDropDescriptors  516 src/objects.cc         MaybeObject* maybe_new_map = map()->CopyDropDescriptors();
CopyDropDescriptors 4360 src/objects.cc     MaybeObject* maybe_new_map = map()->CopyDropDescriptors();
CopyDropDescriptors 4738 src/objects.cc   MaybeObject* maybe_result = CopyDropDescriptors();
CopyDropDescriptors 4787 src/objects.cc   if (pre_allocated_property_fields() == 0) return CopyDropDescriptors();
CopyDropDescriptors 4924 src/objects.h    MUST_USE_RESULT MaybeObject* CopyDropDescriptors();