use sysctl instead of /proc on FreeBSD
(unfortunately this approach is not available on OpenBSD though)
patch from sprewell
Review URL: http://codereview.chromium.org/1979006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@46820 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed