
DDS was temporarily pinned to 4.1.0 because 4.2.0 triggered some test failures (see https://github.com/flutter/flutter/pull/147250). Those failures should be fixed by vm_service 14.2.2, so this unpins DDS and rolls both of these packages (along with devtools_shared, which is a DDS dependency). (If the bot updates vm_service before this is done, I can rebase over that will reduce the size of this PR to just a few files)
microbenchmarks
To run these benchmarks on a device, first run `flutter logs' in one window to see the device logs, then, in a different window, run any of these:
flutter run --release lib/gestures/velocity_tracker_bench.dart
flutter run --release lib/gestures/gesture_detector_bench.dart
flutter run --release lib/stocks/animation_bench.dart
flutter run --release lib/stocks/build_bench.dart
flutter run --release lib/stocks/layout_bench.dart
The results should be in the device logs.
Avoid changing names of the benchmarks
Each microbenchmark is identified by a name, for example, "catmullrom_transform_iteration". Changing the name of an existing microbenchmarks will effectively remove the old benchmark and create a new one, losing the historical data associated with the old benchmark in the process.