[dconf-editor] Use new GtkPopover functions.

[Arnaud Bonatti <arnaudb src gnome org>]

commit 5d88c63ce7bd4e58cce084fb4117c3ffe1212375
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Tue Aug 30 20:26:17 2016 +0200

    Use new GtkPopover functions.

 configure.ac                 |    2 +-
 editor/key-list-box-row.vala |    6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 249cec6..4bf0da1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -32,7 +32,7 @@ APPSTREAM_XML
 # Dependencies
 DCONF_REQUIRED=0.25.1
 GLIB_REQUIRED=2.46.0
-GTK_REQUIRED=3.21.3
+GTK_REQUIRED=3.21.5
 
 PKG_CHECK_MODULES(DCONF_EDITOR, [
   glib-2.0 >= $GLIB_REQUIRED
diff --git a/editor/key-list-box-row.vala b/editor/key-list-box-row.vala
index 7d5901c..cb26522 100644
--- a/editor/key-list-box-row.vala
+++ b/editor/key-list-box-row.vala
@@ -58,7 +58,7 @@ private abstract class ClickableListBoxRow : EventBox
     public void hide_right_click_popover ()
     {
         if (nullable_popover != null)
-            ((!) nullable_popover).hide ();
+            ((!) nullable_popover).popdown ();
     }
 
     public void show_right_click_popover (bool delayed_apply_menu, int event_x = (int) (get_allocated_width 
() / 2.0))
@@ -83,7 +83,7 @@ private abstract class ClickableListBoxRow : EventBox
 
         Gdk.Rectangle rect = { x:event_x, y:get_allocated_height (), width:0, height:0 };
         ((!) nullable_popover).set_pointing_to (rect);
-        ((!) nullable_popover).show ();
+        ((!) nullable_popover).popup ();
     }
 }
 
@@ -364,7 +364,7 @@ private class ContextPopover : Popover
     {
         if (Gdk.keyval_name (event.keyval) != "Menu")
             return false;
-        hide ();
+        popdown ();
         return true;
     }