Message view: Use system tab style

Bug 3138021

Change-Id: I18ec66966e984a4f2b9e330d0ef14dbca5cce5e3
diff --git a/res/drawable/divider.xml b/res/drawable/divider.xml
new file mode 100644
index 0000000..c6789e8
--- /dev/null
+++ b/res/drawable/divider.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- Drawable for a divider.  Intended to be used with LinearLayouts. -->
+
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle" >
+    <size
+        android:width="1dip"
+        android:height="1dip"
+        />
+    <solid
+        android:color="@color/divider_color"
+        />
+</shape>
\ No newline at end of file