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* Revert "Revert "Roll engine to fed2ea458ed49088d33eddabc546ba56d600c717 (includes dart roll) (#19044)" (#19276)" This reverts commit cf932490b77c95841e8798e4864ac3e473a79e18 as it also includes fix for type error that broke tests. * Add type cast for dart2 type checks. * Move up to latest goldens * Make inDirectory() type-parameterized. * Add typecasting to transitions_perf_test.dart and microbenchmarks. * Add boolean flag initialization in save_catalog_screenshots.dart * Add type conversion to gallery transition test
complex_layout
Scrolling benchmark
To run the scrolling benchmark on a device:
flutter drive --profile test_driver/scroll_perf.dart
Results should be in the file build/complex_layout_scroll_perf.timeline_summary.json.
More detailed logs should be in build/complex_layout_scroll_perf.timeline.json.
Startup benchmark
To measure startup time on a device:
flutter run --profile --trace-startup
Results should be in the logs.
Additional results should be in the file build/start_up_info.json.