Skip the RGBTextureTest.SRGB[A]Validation test on Ozone. Many of the other tests in this file are already skipped on this platform but now that GL driver errors cause tests to fail, these tests that previously did not verify their results started to fail. Change-Id: I0d5c88289de42464ae56ac7238c26b384819fe02 Reviewed-on: https://chromium-review.googlesource.com/580255 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>