Initialize the default aliased line width ranges. BUG=angleproject:1468 Change-Id: I1908821fc560bed0cb5427a23739d11b17fea227 Reviewed-on: https://chromium-review.googlesource.com/413327 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>