use the null image instead of NULL, fixes a bunch of crashes. Review URL: http://codereview.chromium.org/8672
use the null image instead of NULL, fixes a bunch of crashes.
Review URL: http://codereview.chromium.org/8672

git-svn-id: http://src.chromium.org/svn/trunk/src@4085 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 83a4691851fd7a330adfae4bd07c578966e6f2f7
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