Web Inspector: [Network] Columns are misaligned as first row goes out of sight.
https://bugs.webkit.org/show_bug.cgi?id=107933

Patch by Eugene Klyuchnikov <eustas@chromium.org> on 2013-01-31
Reviewed by Pavel Feldman.

For some reason if "td" elements in first table row have "display: none"
style, then column width calculation breaks.

* inspector/front-end/networkLogView.css:
(.network-log-grid.data-grid tr.offscreen > td > div):
Hide content instead of "td" element itself.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141406 268f45cc-cd09-0410-ab3c-d52691b4dbfc