ScrollbarThumbExtraParams  205 ui/native_theme/native_theme.h     ScrollbarThumbExtraParams scrollbar_thumb;
ScrollbarThumbExtraParams 1215 ui/native_theme/native_theme_win.cc     const ScrollbarThumbExtraParams& extra) const {
ScrollbarThumbExtraParams  223 ui/native_theme/native_theme_win.h                               const ScrollbarThumbExtraParams& extra) const;