[epiphany] search-engine-dialog: make +/- buttons linked

[Michael Catanzaro <mcatanzaro src gnome org>]

commit b0e8fcdd19ea6468895c7dc51fa1b6b15076c5f7
Author: vanadiae <vanadiae35 gmail com>
Date:   Tue Jun 23 21:25:16 2020 +0200

    search-engine-dialog: make +/- buttons linked
    
    Currently, the add and remove buttons are next each other but
    have both rounded corners on all sides which make them look
    weird.
    
    This commit make the buttons have a linked style (no more round
    corners for their common side).

 src/resources/gtk/search-engine-dialog.ui | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/resources/gtk/search-engine-dialog.ui b/src/resources/gtk/search-engine-dialog.ui
index b1969730a..5202965b8 100644
--- a/src/resources/gtk/search-engine-dialog.ui
+++ b/src/resources/gtk/search-engine-dialog.ui
@@ -105,6 +105,9 @@
                         <property name="position">1</property>
                       </packing>
                     </child>
+                    <style>
+                      <class name="linked"/>
+                    </style>
                   </object>
                   <packing>
                     <property name="expand">False</property>