tree 178ac8a33c489af9c95bbfc24a819e274b4eff47
parent 6165526d45017987746ea0ce4370f1cf703c95e5
author Ethan Nicholas <ethannicholas@google.com> 1614197527 -0500
committer Ethan Nicholas <ethannicholas@google.com> 1614200658 +0000

Add DSL PossibleExpression & PossibleStatement

These are currently unused, but in future CLs they will be used to
capture line number information in DSL error handling.

Change-Id: Ieee730e0ad8323043437972fedb5bec471c367e4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/375069
Reviewed-by: John Stiles <johnstiles@google.com>