Mark IndexedDB flaky.
Mark IndexedDB flaky.

BUG=67918
TEST=page_cycler_indexeddb goes green
TBR=nsylvain@chromium.org

Review URL: http://codereview.chromium.org/6596051

git-svn-id: http://src.chromium.org/svn/trunk/src@76266 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: ffc1fb58c22b1c6804fd44670f3d6c21ef0f72a6
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