[wrapper-tracing] Add NodeList write barriers

BUG=chromium:468240
R=haraken@chromium.org,hlopko@chromium.org

Review-Url: https://chromiumcodereview.appspot.com/2435003002
Cr-Commit-Position: refs/heads/master@{#426475}

third_party/WebKit/Source/core/dom/Document.cpp

@@ -3999,6 +3999,7 @@ void Document::setCSSTarget(Element* newTarget) {
 void Document::registerNodeList(const LiveNodeListBase* list) {
   DCHECK(!m_nodeLists[list->invalidationType()].contains(list));
   m_nodeLists[list->invalidationType()].add(list);
+  ScriptWrappableVisitor::writeBarrier(this, list);
   if (list->isRootedAtTreeScope())
     m_listsInvalidatedAtDocument.add(list);
 }
@@ -4015,6 +4016,7 @@ void Document::unregisterNodeList(const LiveNodeListBase* list) {
 void Document::registerNodeListWithIdNameCache(const LiveNodeListBase* list) {
   DCHECK(!m_nodeLists[InvalidateOnIdNameAttrChange].contains(list));
   m_nodeLists[InvalidateOnIdNameAttrChange].add(list);
+  ScriptWrappableVisitor::writeBarrier(this, list);
 }
 
 void Document::unregisterNodeListWithIdNameCache(const LiveNodeListBase* list) {

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;
   }
 

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

@@ -76,8 +76,10 @@ class NodeRareData : public GarbageCollectedFinalized<NodeRareData>,
   // initialized m_nodeLists is cleared by NodeRareData::traceAfterDispatch().
   NodeListsNodeData& ensureNodeLists() {
     DCHECK(ThreadState::current()->isGCForbidden());
-    if (!m_nodeLists)
+    if (!m_nodeLists) {
       m_nodeLists = NodeListsNodeData::create();
+      ScriptWrappableVisitor::writeBarrier(this, m_nodeLists);
+    }
     return *m_nodeLists;
   }