[totem] (6 commits) Non-fast-forward update to branch wip/hadess/glsink

[Bastien Nocera <hadess src gnome org>]

The branch 'wip/hadess/glsink' 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:

  d94d6c1... flatpak: Remove obsolete clutter dependencies
  abca628... all: Remove obsolete source files
  c13d2fd... backend: Port to gtkglsink
  cfb0326... implement scroll on seek bar and volume button
  580497a... backend: Remove unused *-requested signals
  4a89341... reimplement popup showing/hiding
  22bade8... ci: Remove obsolete clutter dependencies

Commits added to the branch:

  1a01884... backend: Port to gtkglsink
  344ca06... backend: Remove unused *-requested signals
  d73ddab... all: Remove obsolete source files
  80d5033... flatpak: Remove obsolete clutter dependencies
  8c549ff... ci: Remove obsolete clutter dependencies
  350d77f... backend: Add FPS display when using FPS_DISPLAY=1