
* Roll engine to b6df7a637498ca9beda1fa9cd7210e3202ea599f. Changes since last roll: ``` b6df7a637 Roll dart to 290c576264faa096a0b3206c71b2435309d9f904. (#4771) a6764dbd5 Add sources for Fuchsia target. (#4763) 2d5900615 [fuchsia] Remove unused header file. (#4769) 9717063b7 Revert "Roll dart to c080951d45e79cd25df98036c4be835b284a269c. (#4767)" (#4768) 9a9814312 Roll dart to c080951d45e79cd25df98036c4be835b284a269c. (#4767) e74e8b35c [async] Update includes of async headers to new path (#4760) e2c4b2760 Use Dart 2 camel case constants in the engine Dart libraries (#4766) 9c1e48434 Updates for Fuchsia roll. (#4765) 14c940e27 Switch from fxl::Mutex to std::mutex (#4764) debf82c0b Roll Garnet (#4759) 5bffdefbb Use weak pointers to the accesibility bridge from objects vended to the UIKit accessibility framework. (#4761) ```
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
.