65568 Remove unused ‘dart:async’ imports. (a: accessibility, a: internationalization, a: tests, cla: yes, f: cupertino, f: material design, framework, team, tool)

65602 Reland “perf test for measuring scroll smoothness” (a: tests, cla: yes, framework, team, waiting for tree to go green)

65635 Revert “Reland “Make sure all isolates start during flutter driver tests”” (a: tests, cla: yes, framework, waiting for tree to go green)

65660 Revert “Reland “Make sure all isolates start during flutter driver te… (a: tests, cla: yes, framework)

65667 Fix the character field of the RawKeyEvent to hold correct data on non-Android platforms. (a: desktop, a: tests, cla: yes, framework, team)