This reverts commit c1976b097d.
Reason for revert: It seems this change caused failures on Flutter
HHH bot. Example log can be found at [0]:
```
| lib/src/super_reader/super_reader.dart:615:14: Error: Final field 'showDebugLeaderBounds' is not initialized.
| Try to initialize the field in the declaration or in every constructor.
| final bool showDebugLeaderBounds;
| ^^^^^^^^^^^^^^^^^^^^^
```
Looking at the sources it seems that may be related to the
`// ignore: unused_element` analyzer directive:
```
602 /// A [SuperReaderDocumentLayerBuilder] that builds a [SelectionLeadersDocumentLayer], which positions
603 /// leader widgets at the base and extent of the user's selection, so that other widgets
604 /// can position themselves relative to the user's selection.
605 class _SelectionLeadersDocumentLayerBuilder implements SuperReaderDocumentLayerBuilder {
606 const _SelectionLeadersDocumentLayerBuilder({
607 required this.links,
608 // ignore: unused_element
609 this.showDebugLeaderBounds = false,
610 });
611
612 /// Collections of [LayerLink]s, which are given to leader widgets that are
613 /// positioned at the selection bounds, and around the full selection.
614 final SelectionLayerLinks links;
615
616 /// Whether to paint colorful bounds around the leader widgets, for debugging purposes.
617 final bool showDebugLeaderBounds;
```
So tentatively reverting this CL.
[0] https://logs.chromium.org/logs/dart/buildbucket/cr-buildbucket/8739650477551803313/+/u/Run_customer_testing_tests/stdout
Original change's description:
> analyzer: separate unused_element_parameter from unused_element
>
> Fixes https://github.com/dart-lang/sdk/issues/49025
>
> This allows users to blanket ignore unused_element_parameter without
> ignoring unused_element. They are reported in distinct situations so it
> is valid to separate them.
>
> Tested: Presubmit CI
> Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try
> Change-Id: I4844a6a0e0a67cd5e37ed8735b1526e174deb950
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/378500
> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
> Reviewed-by: Phil Quitslund <pquitslund@google.com>
> Commit-Queue: Samuel Rawlins <srawlins@google.com>
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
Change-Id: Ibbba75fe56601c7c4b5535c9142cf94c2dd80b91
Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380460
Commit-Queue: Martin Kustermann <kustermann@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Martin Kustermann
b888da751e