75005 Remove “unnecessary” imports in material (cla: yes, f: cupertino, f: material design, framework, waiting for tree to go green)

75006 Remove “unnecessary” imports in cupertino tests (cla: yes, f: cupertino, framework, waiting for tree to go green)

75007 Remove “unnecessary” imports in foundation,gestures tests (cla: yes, framework, waiting for tree to go green)

75030 Revert “NNBD integration_test” (a: tests, cla: yes, framework, team)

75032 Text Editing Movement Keys via Shortcuts (cla: yes, f: material design, framework)

75037 [web] benchmark and optimize defaultTargetPlatform (cla: yes, framework, team)