flex is probably needed to build Google Chrome, the link I posted for mozilla-nss.SlackBuild should work for building a slackware package for nss, tho when i tried the script got a 404 error on the wget. connie has a slackware package on her site that works tho. i successfully built nspr with sbbuilder, took some minor hacks and the resulting package is too ugly to offer for the repo. hope this helps.
nspr and nss are the key to getting chrome to run on Vector Linux.