Code review comment for lp:~albaguirre/mir/fix-1498540

OK as a quick fix.

+ //TODO: This region is mainly used for scaling touchscreen coordinates, so the caller
+ // probably wants the full list of rectangles. Additional work is needed
+ // to group a touchscreen with a display.

+1

Should we be worried about the "mainly" part? What other uses does it currently have that may be affected by this change?

Mainly approve, but need some info :)