$ ls /usr/share/doc/google-chrome* /usr/share/doc/google-chrome: /usr/share/doc/google-chrome-38.0.2125.101_p1: changelog.bz2 README.gentoo.bz2 www-client/google-chrome-38.0.2125.101_p1 USE="plugins" LINGUAS="-am -ar -bg -bn -ca -cs -da -de -el en_GB -es -es_LA -et -fa -fi -fil -fr -gu -he -hi -hr -hu -id -it -ja -kn -ko -lt -lv -ml -mr -ms -nb -nl -pl -pt_BR -pt_PT -ro -ru -sk -sl -sr -sv -sw -ta -te -th -tr -uk -vi -zh_CN -zh_TW"
Report this upstream please; the empty directory is present in the deb file.
I updated the ebuild to remove empty directories.
Took a while to figure out where to post it, but here it is: https://productforums.google.com/forum/#!category-topic/chrome/report-a-problem-and-get-troubleshooting-help/linux/Stable/NWSsPRiMftM Thanks for tidying up Gentoo in the meantime.