[heap] Don't use black pages for map, code and, lo space. Instead color objects black.

src/heap/heap-inl.h

Index: src/heap/heap-inl.h
diff --git a/src/heap/heap-inl.h b/src/heap/heap-inl.h
index afe107fe35ee71f4bb3fd3cf1e36be2915d07e05..e31d3d6859b4630677794d4062c0053b67eb4bb5 100644
--- a/src/heap/heap-inl.h
+++ b/src/heap/heap-inl.h
@@ -251,6 +251,12 @@ AllocationResult Heap::AllocateRaw(int size_in_bytes, AllocationSpace space,
   } else {
     old_gen_exhausted_ = true;
   }
+
+  if (!old_gen_exhausted_ && incremental_marking()->black_allocation() &&
+      space != OLD_SPACE) {
+    Marking::MarkBlack(Marking::MarkBitFrom(object));
+    MemoryChunk::IncrementLiveBytesFromGC(object, size_in_bytes);
+  }
   return allocation;
 }