GTK: fix task manager grouped row selection
GTK: fix task manager grouped row selection

more sorted-path/unsorted-path conversion hoop jumping

BUG=41564
TEST=manual

Review URL: http://codereview.chromium.org/1630031

git-svn-id: http://src.chromium.org/svn/trunk/src@45072 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 51ac2ba9b11e80ac00574d759fcf900ff1238193
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