Move ref_counted to the new atomic_ref_count interface.
Move ref_counted to the new atomic_ref_count interface.

BUG=1112286



git-svn-id: http://src.chromium.org/svn/trunk/src@425 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 260b270cd09d0a0975c1ab5e63507e291f401562
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