This test was previously passing, but adding the new enum support has
somehow uncovered a crashing bug. Mark it as skipped.

BUG=angleproject:1150
BUG=angleproject:1151

Change-Id: Ieb0254606eab716a1628168433069ff8016e47a3
Reviewed-on: https://chromium-review.googlesource.com/313570Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>