[gtk] (4 commits) Non-fast-forward update to branch window-api-cleanup

[Matthias Clasen <matthiasc src gnome org>]

The branch 'window-api-cleanup' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  9033a98... Remove GtkWindow::role
  3113411... gdk: Stop implementing set_role
  4251ec0... gdk: Drop gdk_surface_set_role

Commits added to the branch:

  be944e0... file chooser: Stop setting a role
  2f35846... Remove GtkWindow::role
  8ef4e23... gdk: Stop implementing set_role
  0d43d11... gdk: Drop gdk_surface_set_role