24932 Fixed Typography null factory constructor (cla: yes, f: material design, framework)

24941 Update Switch doc: disabled state (cla: yes, f: material design, framework)

24942 Fix debugPrint(null) to not crash (cla: yes, framework, severe: crash)

24944 Fix flutter root error message string interpolation (cla: yes, tool)

24953 Fuchsia multiple devices and target (cla: yes, customer: fuchsia, tool)

24976 Support TextField multi-line hint text #20941 (cla: yes, f: material design, framework)

24989 Add documentation for how to use annotated region (cla: yes, d: api docs, framework)

24993 Add InputDecoration alignLabelWithHint parameter (cla: yes, f: material design, framework)