Remove the artificial uniform vector limitation in D3D11. BUG=407309 Change-Id: Ic59bea88f0a4d7a6df9089238be0c79d654016e2 Reviewed-on: https://chromium-review.googlesource.com/269971 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>