This test was specifying a draw with two indices instead of six.
This wasn't producing any error on most configurations, but on
Android it was producing a driver error that was only visible in
Debug.

BUG=angleproject:2086

Change-Id: I7c3cee4cc10d6c37e3bac8ed9fbc16ecb2cb9e63
Reviewed-on: https://chromium-review.googlesource.com/546539
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>