Oilpan: Remove guardRef and guardDeref from TreeScope.

Source/core/dom/DocumentMarkerController.h

 /*
  * 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, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 10 matching lines @@
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef DocumentMarkerController_h
 #define DocumentMarkerController_h
 
 #include "core/dom/DocumentMarker.h"
+#include "heap/Handle.h"
 #include "platform/geometry/IntRect.h"
 #include "wtf/HashMap.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
 class ContainerNode;
 class LayoutPoint;
 class LayoutRect;
 class Node;
@@ skipping 19 matching lines @@
     bool hasMarkers(Range*, DocumentMarker::MarkerTypes = DocumentMarker::AllMarkers());
 
     void prepareForDestruction();
     // When a marker partially overlaps with range, if removePartiallyOverlappingMarkers is true, we completely
     // remove the marker. If the argument is false, we will adjust the span of the marker so that it retains
     // the portion that is outside of the range.
     enum RemovePartiallyOverlappingMarkerOrNot { DoNotRemovePartiallyOverlappingMarker, RemovePartiallyOverlappingMarker };
     void removeMarkers(Range*, DocumentMarker::MarkerTypes = DocumentMarker::AllMarkers(), RemovePartiallyOverlappingMarkerOrNot = DoNotRemovePartiallyOverlappingMarker);
     void removeMarkers(Node*, unsigned startOffset, int length, DocumentMarker::MarkerTypes = DocumentMarker::AllMarkers(),  RemovePartiallyOverlappingMarkerOrNot = DoNotRemovePartiallyOverlappingMarker);
 
+    void clearWeakMembers(Visitor*);
+
     void removeMarkers(DocumentMarker::MarkerTypes = DocumentMarker::AllMarkers());
     void removeMarkers(Node*, DocumentMarker::MarkerTypes = DocumentMarker::AllMarkers());
     void repaintMarkers(DocumentMarker::MarkerTypes = DocumentMarker::AllMarkers());
     void invalidateRenderedRectsForMarkersInRect(const LayoutRect&);
     void shiftMarkers(Node*, unsigned startOffset, int delta);
     void setMarkersActive(Range*, bool);
     void setMarkersActive(Node*, unsigned startOffset, unsigned endOffset, bool);
 
     DocumentMarker* markerContainingPoint(const LayoutPoint&, DocumentMarker::MarkerType);
     Vector<DocumentMarker*> markersFor(Node*, DocumentMarker::MarkerTypes = DocumentMarker::AllMarkers());
@@ skipping 20 matching lines @@
     DocumentMarker::MarkerTypes m_possiblyExistingMarkerTypes;
 };
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 void showDocumentMarkers(const WebCore::DocumentMarkerController*);
 #endif
 
 #endif // DocumentMarkerController_h