[wrapper-tracing] Trace CustomElementReactionStack

third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 256 matching lines @@
 }
 
 bool LocalDOMWindow::allowPopUp() {
   return frame() && allowPopUp(*frame());
 }
 
 LocalDOMWindow::LocalDOMWindow(LocalFrame& frame)
     : m_frame(&frame),
       m_visualViewport(DOMVisualViewport::create(this)),
       m_unusedPreloadsTimer(this, &LocalDOMWindow::warnUnusedPreloads),
-      m_shouldPrintWhenFinishedLoading(false) {
-}
+      m_shouldPrintWhenFinishedLoading(false),
+      m_customElements(this, nullptr) {}
 
 void LocalDOMWindow::clearDocument() {
   if (!m_document)
     return;
 
   ASSERT(!m_document->isActive());
 
   // FIXME: This should be part of SuspendableObject shutdown
   clearEventQueue();
 
@@ skipping 1269 matching lines @@
   visitor->trace(m_customElements);
   visitor->trace(m_applicationCache);
   visitor->trace(m_eventQueue);
   visitor->trace(m_postMessageTimers);
   visitor->trace(m_visualViewport);
   visitor->trace(m_eventListenerObservers);
   DOMWindow::trace(visitor);
   Supplementable<LocalDOMWindow>::trace(visitor);
 }
 
+DEFINE_TRACE_WRAPPERS(LocalDOMWindow) {
+  visitor->traceWrappers(m_customElements);
+  DOMWindow::traceWrappers(visitor);
+}
+
 LocalFrame* LocalDOMWindow::frame() const {
   // If the LocalDOMWindow still has a frame reference, that frame must point
   // back to this LocalDOMWindow: otherwise, it's easy to get into a situation
   // where script execution leaks between different LocalDOMWindows.
   SECURITY_DCHECK(!m_frame || m_frame->domWindow() == this);
   return m_frame;
 }
 
 }  // namespace blink