Fix crash.
Fix crash.

BUG=27145,possibly others
TEST=See bug.

Review URL: http://codereview.chromium.org/399014

git-svn-id: http://src.chromium.org/svn/trunk/src@32121 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 20c28c5c0cf9ce06109c62be57bff1f439e143e4
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