ColumnIndexCalculationMode 317 Source/core/rendering/RenderMultiColumnSet.cpp unsigned RenderMultiColumnSet::columnIndexAtOffset(LayoutUnit offset, ColumnIndexCalculationMode mode) const ColumnIndexCalculationMode 121 Source/core/rendering/RenderMultiColumnSet.h unsigned columnIndexAtOffset(LayoutUnit, ColumnIndexCalculationMode = ClampToExistingColumns) const;