Clean up os_unix.c.
Clean up os_unix.c.

TEST=none
BUG=none


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=31888
Review URL: http://codereview.chromium.org/384075

git-svn-id: http://src.chromium.org/svn/trunk/src@31936 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 628de133f9e19fe28143a5e8f392ac4f5a7785a1
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser