[wrapper-tracing] Add NodeList write barriers

third_party/WebKit/Source/core/dom/NodeListsNodeData.h

Index: third_party/WebKit/Source/core/dom/NodeListsNodeData.h
diff --git a/third_party/WebKit/Source/core/dom/NodeListsNodeData.h b/third_party/WebKit/Source/core/dom/NodeListsNodeData.h
index 7c64bfd6214096337ca20b89bd7866fc0d13da12..53c7518768ddfaa7bb5f909575ff818d6bbcfb8c 100644
--- a/third_party/WebKit/Source/core/dom/NodeListsNodeData.h
+++ b/third_party/WebKit/Source/core/dom/NodeListsNodeData.h
@@ -48,6 +48,7 @@ class NodeListsNodeData final : public GarbageCollected<NodeListsNodeData> {
       return toChildNodeList(m_childNodeList);
     ChildNodeList* list = ChildNodeList::create(node);
     m_childNodeList = list;
+    ScriptWrappableVisitor::writeBarrier(this, list);
     return list;
   }
 
@@ -57,6 +58,7 @@ class NodeListsNodeData final : public GarbageCollected<NodeListsNodeData> {
       return toEmptyNodeList(m_childNodeList);
     EmptyNodeList* list = EmptyNodeList::create(node);
     m_childNodeList = list;
+    ScriptWrappableVisitor::writeBarrier(this, list);
     return list;
   }