57736 [AppBarTheme] adds centerTitle property (cla: yes, f: material design, framework, severe: new feature, waiting for tree to go green)

57745 Chips text scaling (cla: yes, f: material design, framework, waiting for tree to go green)

57751 Step 2 of 3: Change opt-in default for useMaterialBorderRadius on Dialogs (a: fidelity, a: quality, cla: yes, f: material design, framework, waiting for tree to go green)

57809 Stopped all animation controllers after toggleable has been detached. (cla: yes, f: material design, framework, waiting for tree to go green)

57821 fix a typo in trace events for the image cache (cla: yes, framework, team, waiting for tree to go green)