Make intermediate output symbol names consistent Make intermediate output symbol names consistent across uses in parameter names, struct names, variable names: - built-in without quotes - '' empty - #satb ANGLE internal - 'a' user-defined Previously empty parameters would output the symbol id-generated name ("sabb"), which was surprising when this is used only when the symbol is in AngleInternal namespace, and not in Empty namespace. Bug: angleproject:378584780 Change-Id: I87b13cf964a1ae3ee54b8f4ef7a00eddcd474760 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6011018 Auto-Submit: Kimmo Kinnunen <kkinnunen@apple.com> Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>