Register Metrics prefs for Mac and Linux.
Register Metrics prefs for Mac and Linux.

http://codereview.chromium.org/20350


git-svn-id: http://src.chromium.org/svn/trunk/src@9763 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 4772236c2fe222c46ab788915dff0d80d2f8ab4e
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