pub unsafe fn RegisterContextProfilingEventMarker(
cx: &JSContext,
mark: Option<unsafe extern "C" fn(arg1: MarkerCategory, arg2: *const c_char, arg3: *const c_char)>,
interval: Option<unsafe extern "C" fn(arg1: MarkerCategory, arg2: *const c_char, arg3: TimeStamp, arg4: *const c_char)>,
)