CCleaner Skipping Chrome

I'm new to this board. I'm running CCleaner on a Surface Pro 1 with Windows V8.1.

I noticed today that the program is skipping the Chrome files. Anyone know why? What setting am I skipping? I've attached a screen clipping.

post-68823-0-54668000-1392469667_thumb.png

Thanx for any advice!

Sam

Some info here which may help

http://forum.piriform.com/index.php?showtopic=40285