NEW_SPACE_BELOW_AGE_MARK  328 src/heap-inl.h   bool below_mark = page->IsFlagSet(MemoryChunk::NEW_SPACE_BELOW_AGE_MARK) &&
NEW_SPACE_BELOW_AGE_MARK 1473 src/spaces.cc        page->ClearFlag(MemoryChunk::NEW_SPACE_BELOW_AGE_MARK);
NEW_SPACE_BELOW_AGE_MARK 1520 src/spaces.cc      it.next()->SetFlag(MemoryChunk::NEW_SPACE_BELOW_AGE_MARK);