Handle the more verbose apt-get output format sometimes seen  (on ubuntu 8.10?)
Handle the more verbose apt-get output format sometimes seen 
(on ubuntu 8.10?)

This fixes the error
E: Package php5-timezonedb has no installation candidate
that several people, myself included, have been hitting.

Review URL: http://codereview.chromium.org/92013

git-svn-id: http://src.chromium.org/svn/trunk/src@14207 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 87f2411bfc8d5e71cc2c5e9c9aa7e236d27ee94f
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