Remove a comment long-obsolete.
Remove a comment long-obsolete.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/545160

git-svn-id: http://src.chromium.org/svn/trunk/src@36810 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 91da6fc26824ef799de6d3b81af36969093435fa
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