[gnome-shell] (4 commits) Non-fast-forward update to branch gbsneto/offscreen-paint-node

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

The branch 'gbsneto/offscreen-paint-node' 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:

  216508e... glsl-effect: Switch to create_pipeline vfunc
  d8464e7... invert-lightness-effect: Switch to create_pipeline vfunc
  4881347... st/scroll-view-fade: Adapt to paint_target() API changes
  ceade7e... shell: Adapt to ClutterEffect vfunc changes

Commits added to the branch:

  48a9c67... glsl-effect: Switch to create_pipeline vfunc
  8b3a01a... invert-lightness-effect: Switch to create_pipeline vfunc
  4d1cce3... st/scroll-view-fade: Adapt to paint_target() API changes
  736de84... shell: Adapt to ClutterEffect vfunc changes