CFT: Wi-fi Geolocation Provider

[J.R. Oldroyd]

This is now working.

Thanks to Evan Martin for looking over it and sending words of advice.

A couple of additional changes were needed to other chromium files to
remove stubs that were in use instead of this code, after which it
worked.

Please (re-)download the patches and try it out.  There are now five
new or changed port patch files.

I'll give it a week or so for any feedback and then send it to the
FreeBSD port maintainers.

	-jr