Fix OptionsUITest for Chrome OS.
Fix OptionsUITest for Chrome OS.

I thought the compiler could catch errors like that,
but apparently I was wrong.

BUG=chromium-os:6030
TEST=out/Release/ui_tests --gtest_filter='OptionsUITest*'

Review URL: http://codereview.chromium.org/4109003

git-svn-id: http://src.chromium.org/svn/trunk/src@64038 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: b657479ecd0487d893eb51a8eb560df44e967878
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