Rename "NoBarrier" memory operations to "Relaxed".

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 431de5ffacddb5dd9ef1b146faa9cf470ad5a1ba..144bbc5085a8b52a13b5636a6725248addc81d60 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -3127,7 +3127,7 @@ HeapObject* Heap::CreateFillerObjectAt(Address addr, int size,
     filler->set_map_after_allocation(
         reinterpret_cast<Map*>(root(kFreeSpaceMapRootIndex)),
         SKIP_WRITE_BARRIER);
-    FreeSpace::cast(filler)->nobarrier_set_size(size);
+    FreeSpace::cast(filler)->relaxed_write_size(size);
   }
   if (mode == ClearRecordedSlots::kYes) {
     ClearRecordedSlotRange(addr, addr + size);