[S.P.] Expand cull-rect for text boxes with selection bounds

Source/core/dom/DocumentMarkerController.h

Index: Source/core/dom/DocumentMarkerController.h
diff --git a/Source/core/dom/DocumentMarkerController.h b/Source/core/dom/DocumentMarkerController.h
index 0acccec2fe8d1aa984497b27c3c3ee70751e7d28..49e91977138db6ff8b42418d2f76c34df2eb41f2 100644
--- a/Source/core/dom/DocumentMarkerController.h
+++ b/Source/core/dom/DocumentMarkerController.h
@@ -83,6 +83,7 @@ public:
     void shiftMarkers(Node*, unsigned startOffset, int delta);
     void setMarkersActive(Range*, bool);
     void setMarkersActive(Node*, unsigned startOffset, unsigned endOffset, bool);
+    bool hasMarkers(Node* node) const { return m_markers.contains(node); }
 
     DocumentMarker* markerContainingPoint(const LayoutPoint&, DocumentMarker::MarkerType);
     DocumentMarkerVector markersFor(Node*, DocumentMarker::MarkerTypes = DocumentMarker::AllMarkers());