[gtk] (2 commits) Non-fast-forward update to branch wip/chergert/macos-iosurface

[Christian Hergert <chergert src gnome org>]

The branch 'wip/chergert/macos-iosurface' 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:

  aa1be0f... macos: use CALayer and IOSurface for rendering
  39e4253... macos: improve position and size during unmaximize
  356673f... macos: avoid redisplay when changing frame
  480f601... macos: delay window resize until compute-size
  6f592a9... macos: delay showing window until buffer is received
  3ed7ffb... macos: setup initial swap rectangle
  647b535... macos: add comment regarding buffer lock
  89922c7... macos: add comment about purging IOSurface
  a4f14a3... macos: delay IOSurface creation until necessary
  d4ffb86... macos: swap buffers before showing window
  8ab50f6... macos: reduce transaction to swap period

Commits added to the branch:

  eea0ccc... macos: use CALayer and IOSurface for rendering
  d570d6e... macos: delay window resize until compute-size