Enable a test, by masking failures if the system does not support IPv6.
Enable a test, by masking failures if the system does not support IPv6.

Review URL: http://codereview.chromium.org/114061

git-svn-id: http://src.chromium.org/svn/trunk/src@17571 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 7fec8d6865cd5d0f1f4019c82b58b7ec0196f95e
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