[gtk/matthiasc/for-master] inspector: Adapt to dropdown api change

[Matthias Clasen <matthiasc src gnome org>]

commit 0ec868bd692b72b5363c118076a3c76ee54a537d
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jun 25 16:40:54 2020 -0400

    inspector: Adapt to dropdown api change
    
    The suppported syntax for dropdowns in ui files
    has changed. Get with the program.

 gtk/inspector/visual.ui | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/gtk/inspector/visual.ui b/gtk/inspector/visual.ui
index 3743574089..8dece056b5 100644
--- a/gtk/inspector/visual.ui
+++ b/gtk/inspector/visual.ui
@@ -290,10 +290,14 @@
                                     <property name="valign">baseline</property>
                                     <property name="hexpand">1</property>
                                     <signal name="notify::selected" handler="direction_changed"/>
-                                    <items>
-                                      <item translatable="yes">Left-to-Right</item>
-                                      <item translatable="yes">Right-to-Left</item>
-                                    </items>
+                                    <property name="model">
+                                      <object class="GtkStringList">
+                                        <items>
+                                          <item translatable="yes">Left-to-Right</item>
+                                          <item translatable="yes">Right-to-Left</item>
+                                        </items>
+                                      </object>
+                                    </property>
                                   </object>
                                 </child>
                               </object>