Vulkan: Support EGL_ANGLE_surface_orientation for vertical surface flipping. This is a simpler way of flipping when the client is aware of the extension. This allows Chrome to render with the correct orientation. BUG=angleproject:2709 Change-Id: I52216b765a42930f2be043a07fe441a9f875a14d Reviewed-on: https://chromium-review.googlesource.com/1127342 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Luc Ferron <lucferron@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>