1dcccbe30b
This reverts commit 1605740703.
Reason for revert: breaks google3
Original change's description:
> Replace FileState.external() with Either2<FileState?, ExternalLibrary>.
>
> Change-Id: I092da57fc3ca57479ea6088ac1a174677c80270b
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195170
> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
TBR=scheglov@google.com,brianwilkerson@google.com
Change-Id: I0fa3817b6022c0a4a767e48486fac2a6783cd5a0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195186
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>