Disables an interstitial test that occassionally fails.
Disables an interstitial test that occassionally fails.

BUG=none
TEST=none
TBR=jcampan
Review URL: http://codereview.chromium.org/18621

git-svn-id: http://src.chromium.org/svn/trunk/src@8381 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 95b2b579dd828b5be682c3efb5e39d85d054ce66
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