Hopefully revo took most of it out for you, not sure what the directories are for GC as iv never used it but the common places are the program folders, program data, users\name\appdata\local and roaming.
Running a search for Google Chrome in the registry might bring up some entries, if not then under all the software directories HKEY_CURRENT_USER\Software - HKEY_LOCAL_MACHINE\SOFTWARE - HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node, there are also software sub directories under HKEY_USERS you should be able to delet anything with mention to Google.