www/chromium: Add back some patches lost in the 37 -> 38 update.
Bump PORTREVISION

Submitted by:	tomek@apostata.org
MFH:		2014Q4


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@370512 35697150-7ecd-e111-bb59-0022644237b5
Add support for -fformat-extensions meaning we can now build the kernel

Submitted by:	kan


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@370513 35697150-7ecd-e111-bb59-0022644237b5