Example: Add a ComboBox in the Styles tab

Change-Id: I4ec4782c13dd7320a988c09fbc96bb4c298c1c04
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>

examples/gallery/content/Styles.qml

@@ -161,6 +161,11 @@ Item {
                 style: RadioButtonStyle{}
                 text: "RadioButton"
             }
+
+            ComboBox {
+                model: ["Paris", "Oslo", "New York"]
+                style: ComboBoxStyle{}
+            }
         }
 
         Row {