56084 Step 1 of 3: Add opt-in fixing Dialog border radius to match Material Spec (a: fidelity, a: quality, 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)

58392 iOS mid-drag activity indicator (a: fidelity, a: quality, cla: yes, f: cupertino, f: scrolling, framework, platform-ios, severe: API break)

58829 Step 3 of 3: Remove opt-in for useMaterialBorderRadius on Dialogs (a: fidelity, a: quality, cla: yes, f: material design, framework, waiting for tree to go green)

a: images - 7 pull request(s)