43927 Fix stdout test (cla: yes, team)

43932 Update CupertinoSlidingSegmentedControl control/feedback mechanism (cla: yes, f: cupertino, framework)

43934 L10n Simplification (a: internationalization, cla: yes, framework, team, waiting for tree to go green)

43939 Revert “Revert “Reland: Migrate examples to the Android embedding v2”” (cla: yes, d: examples, team, team: gallery)

43941 Tweaks after the gradle.dart refactor (cla: yes, tool)

43945 Remove Source.behavior, fix bug in depfile invalidation (cla: yes, tool)

43946 Adding subtitle to ExpansionTile (cla: yes, f: material design, framework)