[gtk+] Non-fast-forward update to branch wip/chergert/quartz-frame-clock

[Christian Hergert <chergert src gnome org>]

The branch 'wip/chergert/quartz-frame-clock' 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:

  ba3c26c... quartz: add GdkDisplayLinkSource and sync to frame clock
  52e2434... Set timeout to possibly wake up with less delay.
  a77faf7... textview: specify CAIRO_CONTENT_COLOR for pixelcache
  2eaafae... wip: force colorspace to match private cairo patches
  2df27b8... wip: hack to disable IM
  f6d9639... textview: share GtkStyleContext with GtkPixelCache
  e9488c7... wip to try with higher frame rates
  5ce4f15... wip: improve frame timings a bit
  ce2b236... quartz: experiment to teach pixel cache about quartz CGLaye
  fca1822... quartz: pause/unpause display link
  c21250b... quartz: micro optimization in rectangle and likely paths
  1236995... quartz: remove flushes
  77d8647... quartz: micro optimize freeing list
  1301c3f... quartz: improve frame timing predictions
  9d87887... quartz: track private cairo patches
  e8673c8... quartz: add missing frame counter field
  b741505... textview: force CAIRO_CONTENT_COLOR
  7d0d1aa... quartz: squash some easy warnings
  a1358b5... gdk: micro optimization during process updates
  ce4d6f7... Revert "gdk: micro optimization during process updates"

Commits added to the branch:

  f8ccfe1... WIP on various quartz performance