This reverts commit 4cd6243d77.
Reason for revert: Breaks anything using the bazel_worker package (which is used for modular compilation with build_runner). https://travis-ci.org/dart-lang/build/jobs/645748778
Original change's description:
> [dart:io] Backport semantic changes from the dart:io NNBD migration.
>
> The NNBD migration required making subtle changes to some dart:io
> semantics in order to provide a better API. This change backports these
> semantic changes to the unmigrated SDK so any issues can be discovered
> now instead of blocking the future SDK unfork.
>
> The Process class will now throw a StateError if the process is detached
> upon accessing the stdin, stdout, stderr, and exitCode getters.
>
> The Socket class will now throw a SocketException if the socket has been
> destroyed or upgraded to a secure socket upon setting or getting socket
> options.
>
> Change-Id: I956fd07e713e51ebd479ebbfe4790d8d2fdf0744
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/133989
> Commit-Queue: Jonas Termansen <sortie@google.com>
> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
TBR=sortie@google.com,lrn@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I744662fcd14ca232bf44a584bb6f3974d48da69a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/134361
Auto-Submit: Jake Macdonald <jakemac@google.com>
Reviewed-by: Jonas Termansen <sortie@google.com>
Commit-Queue: Jonas Termansen <sortie@google.com>
