Fixing ColorDialog test playback on Mac.

QColorDialog tests still continued to fails on OsX.
Cleaning the logic to simply not use native color dialog
on OsX.

Change-Id: Ib4f6c50f11ac16b8a58f33b12956f151f439180e
Merge topic '13082_fix_log_lut' into next

eb31f77 Fixing ColorDialog test playback on Mac.