getScrollbarPseudoStyle  226 Source/core/rendering/RenderScrollbar.cpp     RefPtr<RenderStyle> partStyle = !destroy ? getScrollbarPseudoStyle(partType,  pseudoForScrollbarPart(partType)) : PassRefPtr<RenderStyle>(nullptr);
getScrollbarPseudoStyle   77 Source/core/rendering/RenderScrollbar.h     PassRefPtr<RenderStyle> getScrollbarPseudoStyle(ScrollbarPart, PseudoId);