[gtk+] (12 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:

  a263e96... Add frame drawing API to GdkWindow
  d278e8e... Simplify the widget rendering entry point
  b2a0eea... Add GdkDrawingContext
  a554c49... docs: Add GdkDrawingContext to the GDK API reference

Commits added to the branch:

  5892bd7... widget-factory: Use max-content-size in a popover (*)
  289fc96... Revert "scrolledwindow: Bug 766569 - Report child natural s (*)
  0d407bc... searchenginetracker: Fix prefix searches (*)
  775e277... widget: Add classes to widget path even if no style context (*)
  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
  84c0a39... Associate the drawing context to the Cairo context
  2d5160b... Deprecate the gdk_window_begin/end_paint family of function
  ec0616d... gdk: Explicitly create a cairo context inside GdkDrawingCon
  9c584cb... gdk: Deprecate gdk_cairo_create()

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