[gnome-builder] buildui: make build panel look-and-feel more like listbox

[Christian Hergert <chergert src gnome org>]

commit 077364238a9c058fa88b451eeb8dc06536cc46c8
Author: Christian Hergert <chergert redhat com>
Date:   Sat Jul 22 14:56:13 2017 -0700

    buildui: make build panel look-and-feel more like listbox

 libide/buildui/ide-build-panel.ui |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/libide/buildui/ide-build-panel.ui b/libide/buildui/ide-build-panel.ui
index 4950c24..84b03ee 100644
--- a/libide/buildui/ide-build-panel.ui
+++ b/libide/buildui/ide-build-panel.ui
@@ -90,6 +90,9 @@
                   <object class="IdeFancyTreeView" id="warnings_tree_view">
                     <property name="has-tooltip">true</property>
                     <property name="visible">true</property>
+                    <style>
+                      <class name="i-wanna-be-listbox"/>
+                    </style>
                     <child internal-child="selection">
                       <object class="GtkTreeSelection">
                         <property name="mode">none</property>