Oilpan: have PendingScripts trace their script elements.

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 518 matching lines @@
 #if !ENABLE(OILPAN)
     ASSERT(!hasGuardRefCount());
     // With Oilpan, either the document outlives the visibility observers
     // or the visibility observers and the document die in the same GC round.
     // When they die in the same GC round, the list of visibility observers
     // will not be empty on Document destruction.
     ASSERT(m_visibilityObservers.isEmpty());
 
     if (m_templateDocument)
         m_templateDocument->m_templateDocumentHost = nullptr; // balanced in ensureTemplateDocument().
-#endif
 
     m_scriptRunner.clear();
 
     // FIXME: Oilpan: Not removing event listeners here also means that we do
     // not notify the inspector instrumentation that the event listeners are
     // gone. The Document and all the nodes in the document are gone, so maybe
     // that is OK?
-#if !ENABLE(OILPAN)
     removeAllEventListenersRecursively();
 
     // Currently we believe that Document can never outlive the parser.
     // Although the Document may be replaced synchronously, DocumentParsers
     // generally keep at least one reference to an Element which would in turn
     // has a reference to the Document.  If you hit this ASSERT, then that
     // assumption is wrong.  DocumentParser::detach() should ensure that even
     // if the DocumentParser outlives the Document it won't cause badness.
     ASSERT(!m_parser || m_parser->refCount() == 1);
     detachParser();
@@ skipping 5204 matching lines @@
     visitor->trace(m_docType);
     visitor->trace(m_implementation);
     visitor->trace(m_autofocusElement);
     visitor->trace(m_focusedElement);
     visitor->trace(m_hoverNode);
     visitor->trace(m_activeHoverElement);
     visitor->trace(m_documentElement);
     visitor->trace(m_titleElement);
     visitor->trace(m_markers);
     visitor->trace(m_currentScriptStack);
+    visitor->trace(m_scriptRunner);
     visitor->trace(m_transformSourceDocument);
     visitor->trace(m_listsInvalidatedAtDocument);
 #if ENABLE(OILPAN)
     for (int i = 0; i < numNodeListInvalidationTypes; ++i)
         visitor->trace(m_nodeLists[i]);
 #endif
     visitor->trace(m_cssCanvasElements);
     visitor->trace(m_topLayerElements);
     visitor->trace(m_elemSheet);
     visitor->trace(m_nodeIterators);
@@ skipping 14 matching lines @@
     visitor->trace(m_timeline);
     visitor->trace(m_compositorPendingAnimations);
     visitor->registerWeakMembers<Document, &Document::clearWeakMembers>(this);
     DocumentSupplementable::trace(visitor);
     TreeScope::trace(visitor);
     ContainerNode::trace(visitor);
     ExecutionContext::trace(visitor);
 }
 
 } // namespace WebCore