[EFL] Skip css3/masking tests added in r130592
https://bugs.webkit.org/show_bug.cgi?id=98614

Unreviewed EFL gardening.

Skip the two css3/masking ref tests added in r130592 since
they fail for EFL port and GTK port.

Patch by Christophe Dumez <christophe.dumez@intel.com> on 2012-10-07

* platform/efl/TestExpectations:

git-svn-id: svn://svn.chromium.org/blink/trunk@130595 bbb929c8-8fbe-4397-9dbb-9b2b20218538