Fix arg error check (was expecting too many).
Fix arg error check (was expecting too many).

TEST=none
BUG=none
Review URL: http://codereview.chromium.org/175047

git-svn-id: http://src.chromium.org/svn/trunk/src@25060 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: e31a69d684c3b4f8058674315993cf4d55eff74d
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