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The previous PR was reverted because it was on top of an outdated commit prior to ARC. This PR rebases the main. The only change is removing the `[super dealloc]` call that caused the compiler error. *List which issues are fixed by this PR. You must list at least one issue.* Fixes https://github.com/flutter/flutter/issues/142813 Fixes https://github.com/flutter/flutter/issues/142830 *If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].* [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style