I don't know if your able to or not, but it would be nice if CCleaner was able to either clean or reset the counters that Chrome uses when you click the tab button, it opens up a window displaying website thumbnails of the websites you have visited the most. To me this is spyware, and doesn't belong in a browser (typical of Google).
I assume it is storing this information inside each of your bookmarks, but I don't know for sure.