[gtk] (9 commits) Non-fast-forward update to branch kill-register-surface

[Matthias Clasen <matthiasc src gnome org>]

The branch 'kill-register-surface' 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:

  ff63472... Add gtk_root_get_for_surface
  11c7b9e... ime: Stop using gdk_surface_get_user_data
  4f3e73c... xim: Stop using gdk_surface_get_user_data
  808dd56... main: Stop using gdk_surface_get_user_data
  16f0995... tooltip: Stop using gdk_surface_get_user_data
  b8e0fb3... inspector: Stop using gdk_surface_get_user_data
  9fbb647... gtk-demo: Stop using gdk_surface_get_user_data
  17fc194... Remove gdk_surface_set_user_data

Commits added to the branch:

  b82e57f... fixup: warn about nothing events (*)
  a144275... Add gtk_root_get_for_surface
  e4f6c71... ime: Stop using gdk_surface_get_user_data
  4ee87f0... xim: Stop using gdk_surface_get_user_data
  630c9a0... main: Stop using gdk_surface_get_user_data
  304ec7e... tooltip: Stop using gdk_surface_get_user_data
  8cc6ce6... inspector: Stop using gdk_surface_get_user_data
  0df6988... gtk-demo: Stop using gdk_surface_get_user_data
  335005e... Remove gdk_surface_set_user_data

(*) This commit already existed in another branch; no separate mail sent