f740b500e2
This reverts commit c9ff7d95fd.
Reason for revert: Test failure in google3
Original change's description:
> [dart2js] Migrate source_file_provider.dart
>
> Change-Id: Iaded7ebfe4415f8108c9364521939b8394ab598a
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/249780
> Reviewed-by: Nate Biggs <natebiggs@google.com>
> Commit-Queue: Stephen Adams <sra@google.com>
TBR=sra@google.com,natebiggs@google.com
Change-Id: I23d7ae645b871ed7cca00e49288eb9e2c3f4fce7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/250105
Reviewed-by: Stephen Adams <sra@google.com>
Commit-Queue: Stephen Adams <sra@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>