[gtk+] Drop gdk_get_default_root_window

[Matthias Clasen <matthiasc src gnome org>]

commit 67cea503832a5fa2ca4d8c891a2594027b33b77d
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Oct 31 21:30:59 2017 -0400

    Drop gdk_get_default_root_window
    
    This is a trivial convenience function, and it is barely used.

 docs/reference/gdk/gdk4-sections.txt |    1 -
 gdk/gdkwindow.c                      |    7 -------
 gdk/wayland/gdkdevice-wayland.c      |    2 +-
 3 files changed, 1 insertions(+), 9 deletions(-)
---
diff --git a/docs/reference/gdk/gdk4-sections.txt b/docs/reference/gdk/gdk4-sections.txt
index 564d7db..532211e 100644
--- a/docs/reference/gdk/gdk4-sections.txt
+++ b/docs/reference/gdk/gdk4-sections.txt
@@ -391,7 +391,6 @@ gdk_window_get_decorations
 GdkWMDecoration
 gdk_window_set_functions
 GdkWMFunction
-gdk_get_default_root_window
 
 <SUBSECTION>
 gdk_window_get_support_multidevice
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index b6d686f..a1317b7 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -3375,13 +3375,6 @@ gdk_window_get_device_position (GdkWindow       *window,
   return window;
 }
 
-GdkWindow *
-gdk_get_default_root_window (void)
-{
-  return gdk_display_get_root_window (gdk_display_get_default ());
-}
-
-
 static gboolean
 gdk_window_raise_internal (GdkWindow *window)
 {
diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index f31e07d..575f948 100644
--- a/gdk/wayland/gdkdevice-wayland.c
+++ b/gdk/wayland/gdkdevice-wayland.c
@@ -592,7 +592,7 @@ gdk_wayland_device_query_state (GdkDevice        *device,
   GdkWaylandPointerData *pointer;
 
   if (window == NULL)
-    window = gdk_get_default_root_window ();
+    window = gdk_display_get_root_window (gdk_device_get_display (device));
 
   pointer = GDK_WAYLAND_DEVICE (device)->pointer;