[gtk+] stylecontext: deprecate gtk_style_context_set_background()

[Cosimo Cecchi <cosimoc src gnome org>]

commit a1e80d99d23866772f3cb59ed091696cdf497132
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sun Jun 28 11:23:16 2015 -0700

    stylecontext: deprecate gtk_style_context_set_background()
    
    Nothing in GTK calls it anymore.

 gtk/gtkstylecontext.c |    4 ++++
 gtk/gtkstylecontext.h |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index 5c253d1..df31eb0 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -2470,6 +2470,10 @@ corner_value_is_right_angle (GtkCssValue *value)
  * color specified in @context for its current state.
  *
  * Since: 3.0
+ *
+ * Deprecated: 3.18: Use gtk_render_background() instead.
+ *   Note that clients still using this function are now responsible
+ *   for calling this function again whenever @context is invalidated.
  **/
 void
 gtk_style_context_set_background (GtkStyleContext *context,
diff --git a/gtk/gtkstylecontext.h b/gtk/gtkstylecontext.h
index 2c48350..d138a76 100644
--- a/gtk/gtkstylecontext.h
+++ b/gtk/gtkstylecontext.h
@@ -1187,7 +1187,7 @@ void gtk_style_context_invalidate           (GtkStyleContext *context);
 GDK_AVAILABLE_IN_ALL
 void gtk_style_context_reset_widgets        (GdkScreen       *screen);
 
-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_3_18_FOR(gtk_render_background)
 void gtk_style_context_set_background       (GtkStyleContext *context,
                                              GdkWindow       *window);