Ben Clayton f164a4a723 ast: Add TraverseExpressions()
An ast::Expression traversal helper extracted from Resolver.

Change-Id: I88754cbc86cc12cbf8348fb36a3f038904017f3d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/67202
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2021-10-21 20:38:54 +00:00
..
2021-10-21 20:38:54 +00:00