GGP: Check and enable VK_GGP_frame_token Bug: angleproject:4668 Change-Id: I9ecbdf37e206cb6eb93699091bbff70ad898040f Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2219032 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>