Chromium updates

[George Liaskos]

Hello,

I mostly do the patching of the new versions, i didn't have time to port 26.
Since some versions we use github [0], later tonight i will push 27.
We will skip 26 entirely.

There was a legal issue with courgette in the past so our distfile is
the official minus the courgette directory, this is not my decision.

[0] https://github.com/gliaskos/freebsd-chromium