Fixed assert in options caused by my original CL.
Fixed assert in options caused by my original CL.

TBR=zelidrag
TEST=none
BUG=chromium-os:5522


git-svn-id: http://src.chromium.org/svn/trunk/src@56819 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 297a6c3f105bd7ecfc18b86cfc681a015ca009a8
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