[gnome-shell] (3 commits) Non-fast-forward update to branch wip/carlosg/grabs-pt3

[Marge Bot <marge-bot src gnome org>]

The branch 'wip/carlosg/grabs-pt3' 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:

  522175d... appDisplay: Drop grabHelper.addActor() call
  a8ab6f7... grabHelper: Drop addActor/removeActor calls
  509594d... shell: Drop shell_global_begin/end_modal()

Commits added to the branch:

  1673e87... appDisplay: Drop grabHelper.addActor() call
  d92b71d... grabHelper: Drop addActor/removeActor calls
  643e8ae... shell: Drop shell_global_begin/end_modal()