[gtk+] (20 commits) Non-fast-forward update to branch wip/ebassi/frame-marker

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'wip/ebassi/frame-marker' 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:

  b1f508c... Add frame drawing API to GdkWindow
  bdc74bd... Simplify the widget rendering entry point
  59acc66... Add GdkDrawingContext
  f8f47cb... docs: Add GdkDrawingContext to the GDK API reference
  77ad7e5... Associate the drawing context to the Cairo context
  926988c... Deprecate the gdk_window_begin/end_paint family of function
  1bec964... gdk: Explicitly create a cairo context inside GdkDrawingCon
  40c45cc... gdk: Deprecate gdk_cairo_create()

Commits added to the branch:

  dce4003... Fix preconditions in set_max_content_size setters (*)
  7f06f28... Ensure that GtkRange allocates enough space for the value (*)
  f23e99b... scale, spinbutton: Avoid -0.0 (*)
  3f3a226... Update GtkLabel::angle docs (*)
  ff5304e... Make gtk_scrolled_window_remove() smart (*)
  a0ee8f7... Adwaita: centralize outline-color (*)
  199ad2c... Adwaita: .osd button.color (*)
  6de0ecb... HC: focus outline more prominent (*)
  8540718... wayland: add extended state for tiled (*)
  023f406... test: Skip GtkScrolledWindow::max-content- properties (*)
  d9a6517... wayland: Make sure window titles fit into a wl_buffer (*)
  3288560... Fix build (*)
  f0fa8e7... Add frame drawing API to GdkWindow
  45d33f2... Simplify the widget rendering entry point
  7510615... Add GdkDrawingContext
  af6f977... docs: Add GdkDrawingContext to the GDK API reference
  bfb4fe7... Associate the drawing context to the Cairo context
  b1b0a25... Deprecate the gdk_window_begin/end_paint family of function
  59bf3a0... gdk: Explicitly create a cairo context inside GdkDrawingCon
  3611fc9... gdk: Deprecate gdk_cairo_create()

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