Code review comment for lp://qastaging/~gordallott/unity/newbg

> Move 6 in a variable or something like that. Also rename
> _n_visible_items_in_unexpand_mode and _using_nofilters_background using the
> new style for the private members (variable_).

the rest of the file doesn't follow that convention, the file style overrides the new style and i'm not going to change the entire thing in this mp