25576 Flutter tool support for building dynamic patches on Android (cla: yes, t: gradle, tool)

25579 fix doc-comment snippets (cla: yes, team)

25582 Add missing dependency to fix the build (cla: yes, team, team: gallery)

25584 Fix material reference in CupertinoPicker doc (cla: yes, d: api docs, f: cupertino, framework)

25585 Expose font fallback API in TextStyle, Roll engine 54a3577c0139..215ca1560088 (8 commits) (a: typography, cla: yes, f: material design, framework)

25586 Report devfs stats (cla: yes, tool)

25593 Let CupertinoTabScaffold handle keyboard insets too (cla: yes, f: cupertino, framework)