
Makes the android_semantics_testing test not fail for newer versions of Talkback. Also, since the test now depends on pub_semver, upgraded the pubspec files. The only substantive changes in the PR are in dev/integration_tests/android_semantics_testing/test_driver/main_test.dart
platform_channels_benchmarks
The harness for running performance benchmark tests for Platform Channels.
If you want to run these benchmarks outside of devicelab you need to first run:
flutter create --platforms="ios,android" --no-overwrite .