Add support for *BSD where necessary, equivalent to what Linux does.

BUG=

Review URL: https://codereview.chromium.org/138003017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250026 0039d316-1c4b-4281-b951-d872f2087c98
Blink roll 166755:166772

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=166756:166772&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/130983014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250027 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250028 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250028