TraverseTransitionTree 7903 src/objects.cc   map->TraverseTransitionTree(&GetMinInobjectSlack, &slack);
TraverseTransitionTree 7906 src/objects.cc     map->TraverseTransitionTree(&ShrinkInstanceSize, &slack);
TraverseTransitionTree 5033 src/objects.h    void TraverseTransitionTree(TraverseCallback callback, void* data);