dummySpanAncestorForNode  581 Source/core/editing/ApplyStyleCommand.cpp         startDummySpanAncestor = dummySpanAncestorForNode(start.deprecatedNode());
dummySpanAncestorForNode  593 Source/core/editing/ApplyStyleCommand.cpp         endDummySpanAncestor = dummySpanAncestorForNode(end.deprecatedNode());