Skip ReuploadingClearsTexture test on Mac.
Skip ReuploadingClearsTexture test on Mac.

BUG=chromium:826576

Change-Id: If241e57480efe3aabfb30a2be453f05d45367e4a
Reviewed-on: https://chromium-review.googlesource.com/982910
Commit-Queue: Frank Henigman <4f3ccfa167f952ff7263448ff4377acff6a23e5c@chromium.org>
Reviewed-by: Yuly Novikov <36f5580f63d0a3eacc17e89a61d11e2f646630d2@chromium.org>

ppy/angle,ppy/angle,ppy/angle,ppy/angle