gtk_widget_style_get (gHorizScrollbarWidget, "stepper-spacing",
gtk_widget_style_get (gHorizScrollbarWidget, "stepper_spacing",
moz_gtk_get_scrollbar_metrics(gint* slider_width, gint* trough_border,                              gint* stepper_size, gint* stepper_spacing,                              gint* min_slider_size){    ensure_scrollbar_widget();    if (slider_width) {        gtk_widget_style_get (gHorizScrollbarWidget, "slider-width",                              slider_width, NULL);    }    if (trough_border) {        gtk_widget_style_get (gHorizScrollbarWidget, "trough-border",                              trough_border, NULL);    }    if (stepper_size) {        gtk_widget_style_get (gHorizScrollbarWidget, "stepper-size",                              stepper_size, NULL);    }    if (stepper_spacing) {        gtk_widget_style_get (gHorizScrollbarWidget, "stepper-spacing",                              stepper_spacing, NULL);    }    if (min_slider_size) {        *min_slider_size = GTK_RANGE(gHorizScrollbarWidget)->min_slider_size;    }    return MOZ_GTK_SUCCESS;}