Skip WebGL2UniformBufferTest.LargeArrayOfStructs Times out on Mac NVIDIA GL. Bug: chromium:346561003 Change-Id: If2eb106024a2c693c57f0ea351f981fc73d0af82 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5646492 Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Yuly Novikov <ynovikov@chromium.org> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Auto-Submit: Yuly Novikov <ynovikov@chromium.org>