Revert of Remove the weak list of array buffers

src/heap/objects-visiting-inl.h

Index: src/heap/objects-visiting-inl.h
diff --git a/src/heap/objects-visiting-inl.h b/src/heap/objects-visiting-inl.h
index 6afee2602b28b7bde9cbd93dd71be5f248ae06a2..39803b1a2c98db9db392a6a0f360e3ba250c2dd0 100644
--- a/src/heap/objects-visiting-inl.h
+++ b/src/heap/objects-visiting-inl.h
@@ -80,9 +80,12 @@
     Map* map, HeapObject* object) {
   Heap* heap = map->GetHeap();
 
+  VisitPointers(heap, HeapObject::RawField(
+                          object, JSArrayBuffer::BodyDescriptor::kStartOffset),
+                HeapObject::RawField(object, JSArrayBuffer::kWeakNextOffset));
   VisitPointers(
-      heap,
-      HeapObject::RawField(object, JSArrayBuffer::BodyDescriptor::kStartOffset),
+      heap, HeapObject::RawField(object,
+                                 JSArrayBuffer::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSArrayBuffer::kSizeWithInternalFields));
   return JSArrayBuffer::kSizeWithInternalFields;
 }
@@ -530,10 +533,11 @@
   StaticVisitor::VisitPointers(
       heap,
       HeapObject::RawField(object, JSArrayBuffer::BodyDescriptor::kStartOffset),
+      HeapObject::RawField(object, JSArrayBuffer::kWeakNextOffset));
+  StaticVisitor::VisitPointers(
+      heap, HeapObject::RawField(object,
+                                 JSArrayBuffer::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSArrayBuffer::kSizeWithInternalFields));
-  if (!JSArrayBuffer::cast(object)->is_external()) {
-    heap->RegisterLiveArrayBuffer(JSArrayBuffer::cast(object)->backing_store());
-  }
 }