TrackbarExtraParams  208 ui/native_theme/native_theme.h     TrackbarExtraParams trackbar;
TrackbarExtraParams 1368 ui/native_theme/native_theme_win.cc     const TrackbarExtraParams& extra) const {
TrackbarExtraParams  247 ui/native_theme/native_theme_win.h                         const TrackbarExtraParams& extra) const;