Work around for a crasher with the select popup on Mac.
Work around for a crasher with the select popup on Mac.

BUG=65362
TEST=Make sure select popups work as expected. Test all selects
     on http://vescam.com/select_crasher.html

Review URL: http://codereview.chromium.org/5658001

git-svn-id: http://src.chromium.org/svn/trunk/src@68382 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 77fdd69fc84aa355097bdf644a5bd86e8b56a80a
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