Skip regression test 320948 temporarily.

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/131503008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18859 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/mjsunit.status

@@ -36,7 +36,7 @@
   'debug-step-4-in-frame': [PASS, FAIL, SLOW],
 
   # TODO(mvstanton): Investigate.
-  'regress/regress-320948.js': [PASS, FAIL, FLAKY],
+  'regress/regress-320948.js': [SKIP],
 
   ##############################################################################
   # Fails.