DiscoverGreyObjectsWithIterator 2107 src/mark-compact.cc     DiscoverGreyObjectsWithIterator(heap, marking_deque, &it);
DiscoverGreyObjectsWithIterator 2271 src/mark-compact.cc   DiscoverGreyObjectsWithIterator(heap(), &marking_deque_, &new_it);
DiscoverGreyObjectsWithIterator 2300 src/mark-compact.cc   DiscoverGreyObjectsWithIterator(heap(),