[gtk] (10 commits) Created branch kill-register-surface

[Matthias Clasen <matthiasc src gnome org>]

The branch 'kill-register-surface' was created.

Summary of new commits:

  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
  1a3dae4... Stop using gdk_surface_set_user_data for widget
  33d5ec2... fixups
  45c5b5c... Remove gdk_surface_set_user_data