Add configurations of the TexturePerf benchmark that use robust init. BUG=angleproject:2188 Change-Id: Ia23b54044a85435c761478bceeb9aac961fac0d1 Reviewed-on: https://chromium-review.googlesource.com/783230 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>