This reverts commit 38e0046cad.
Reason for revert: https://github.com/flutter/flutter/issues/133677
Original change's description:
> [vm] Treat Future.then(..., onError:...) as catch all handler
>
> Commit a52f2b9 which reworked awaiter stack unwinding and its
> integration with debugger introduced the following regression:
> it stopped treating `Future` listeners which had both `onValue`
> and `onError` callbacks as catch all exception handlers. Only
> listners with `onError` callback (those created with
> `Future.onError`) were treated as a catch all handler.
>
> This meant that debugger started to treat exceptions in the
> code below as uncaught:
>
> ```
> Future<void> foo() {
> await 0;
> throw '';
> }
>
> await foo().then(..., onError: (e, st) {
>
> });
> ```
>
> This change fixes this regression by checking if
> `FutureListener.state & stateCatchError != 0` instead of
> more narrow `FutureListener.state == stateCatchError` which
> only detects listeners which only catch errors but do not
> handle values. The new predicate matches
> `FutureListener.handlesError`.
>
> Fixes https://github.com/dart-lang/sdk/issues/53334
>
> TEST=service/pause_on_unhandled_async_exceptions_test
>
> Fixed: 53334
> Change-Id: I374114b7a7b2ef86b7ed6bf7d5e7cf71ba6054dc
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/323280
> Reviewed-by: Alexander Markov <alexmarkov@google.com>
> Reviewed-by: Ben Konyi <bkonyi@google.com>
> Commit-Queue: Slava Egorov <vegorov@google.com>
Change-Id: Id20a6929aac93511173c7467caee91e2488696ed
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/323429
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>
98b9b6c07c