Big Suggestion: Stop trying to force Google Chrome on your users! At least give me an opportunity to uncheck it in the CCleaner downloads installs. I will not use Chrome. They spy almost as much as MS.
The installer gives the choice, many times a user may miss this but it is there.
When installing anything, always read it before hitting Next. You could also just download the slim build. http://www.piriform.com/ccleaner/builds