[gtk] (8 commits) ...Merge branch 'wip/chergert/macos-perf-fixes' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  226dc49... profiler: allow using gdk profiler functions without braces (*)
  161ddcf... gsk: make render node getters const (*)
  09b447a... gsk: make render node getters pure (*)
  86c5f2d... gsk: make gsk_render_node_get_node_type() use const (*)
  443d199... macos: mark region as unlikely (*)
  6529622... macos: only flush when not attached (*)
  13e162c... macos: improve use of swap rectangles with OpenGL (*)
  360a66e... Merge branch 'wip/chergert/macos-perf-fixes' into 'master'

(*) This commit already existed in another branch; no separate mail sent