These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R    ] www-client/chromium-43.0.2357.18::gentoo  USE="(pic) tcmalloc -cups -custom-cflags -gnome -gnome-keyring -hidpi -kerberos (-neon) -proprietary-codecs -pulseaudio (-selinux) {-test} -widevine" 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" 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB