[mutter] (6 commits) Non-fast-forward update to branch gbsneto/content

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

The branch 'gbsneto/content' 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:

  057e2bc... shaped-texture: Implement ClutterContent
  8fe497c... wayland/actor-surface: Set geometry scale in surface actor
  2786107... shaped-texture: Draw pipeline relative to alloc
  1fe44fc... shaped-texture: Move MetaCullable helpers to MetaSurfaceAct
  f52db58... shaped-texture: Move private function to private header
  ce5795c... wayland/tablet-tool: Use meta_wayland_surface_get_relative_

Commits added to the branch:

  8c6b6a2... shaped-texture: Implement ClutterContent
  e5b8e06... wayland/actor-surface: Set geometry scale in surface actor
  5403cd2... shaped-texture: Draw pipeline relative to alloc
  3bde30c... shaped-texture: Move MetaCullable helpers to MetaSurfaceAct
  bc60172... shaped-texture: Move private function to private header
  328c516... wayland/tablet-tool: Use meta_wayland_surface_get_relative_