Googlw chrome and pac file

Has anyone got the system proxy pac file working with google chrome. I specify the location of the pac file in ifcfg and it does not seen to read it. If a pac file is specified google-chrome uses the system one. Is there a specific location the .pac file needs to reside?

in ifcfg i set
PROXY_METHOD=auto
PAC_SCRIPT=
BROWSER_ONLY=yes