21685 Make TextInputModel::selection_start/end const (affects: text input, cla: yes, platform-linux, platform-windows)

21711 Perform selection check in DeleteSelected (affects: text input, cla: yes, platform-linux, platform-windows)

21722 Extract textrange (affects: text input, cla: yes, platform-linux, platform-windows)

21854 Migrate TextInputPlugin API to TextRange (affects: text input, cla: yes, platform-linux, platform-windows)

21874 Add TextRange::Contains tests spanning base/extent (affects: text input, cla: yes, platform-linux, platform-windows)

22094 Add plumbing for command line arguments on Windows (affects: desktop, cla: yes, needs tests, platform-windows, waiting for tree to go green)