4c0121f2d3
This allows seeing the generated AST before failing on error comment discrepancies. Change-Id: I9d43c37a9b5922818c58928056c194867d378056 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/408521 Reviewed-by: Jens Johansen <jensj@google.com> Commit-Queue: Johnni Winther <johnniwinther@google.com>