[gnome-builder] symboltree: add style override for entry

[Christian Hergert <chergert src gnome org>]

commit 52a28ae98e2a769479ef4c6386da98909b81a955
Author: Christian Hergert <christian hergert me>
Date:   Fri Jan 15 12:00:32 2016 -0800

    symboltree: add style override for entry

 plugins/symbol-tree/symbol-tree.gresource.xml |    1 +
 plugins/symbol-tree/theme/shared.css          |    4 ++++
 2 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/plugins/symbol-tree/symbol-tree.gresource.xml b/plugins/symbol-tree/symbol-tree.gresource.xml
index 4b10ecf..8254177 100644
--- a/plugins/symbol-tree/symbol-tree.gresource.xml
+++ b/plugins/symbol-tree/symbol-tree.gresource.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <gresources>
   <gresource prefix="/org/gnome/builder/plugins/symbol-tree">
+    <file>theme/shared.css</file>
     <file>symbol-tree.ui</file>
   </gresource>
 </gresources>
diff --git a/plugins/symbol-tree/theme/shared.css b/plugins/symbol-tree/theme/shared.css
new file mode 100644
index 0000000..95d2770
--- /dev/null
+++ b/plugins/symbol-tree/theme/shared.css
@@ -0,0 +1,4 @@
+symboltree entry {
+  border-radius: 0;
+  border-width: 0 0 1px 0;
+}