Add bluetooth device type icons on MD system tray.

ash/resources/vector_icons/system_menu_tablet.1x.icon

Index: ash/resources/vector_icons/system_menu_tablet.1x.icon
diff --git a/ash/resources/vector_icons/system_menu_tablet.1x.icon b/ash/resources/vector_icons/system_menu_tablet.1x.icon
new file mode 100644
index 0000000000000000000000000000000000000000..e078da300d91389bd6c0c8d9b9eb4c13ac1f820b
--- /dev/null
+++ b/ash/resources/vector_icons/system_menu_tablet.1x.icon
@@ -0,0 +1,22 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+CANVAS_DIMENSIONS, 20,
+MOVE_TO, 2, 6.01f,
+CUBIC_TO, 2, 4.9f, 2.9f, 4, 3.99f, 4,
+R_H_LINE_TO, 12.01f,
+CUBIC_TO, 17.11f, 4, 18, 4.9f, 18, 6.01f,
+R_V_LINE_TO, 7.98f,
+R_CUBIC_TO, 0, 1.11f, -0.89f, 2.01f, -1.99f, 2.01f,
+H_LINE_TO, 3.99f,
+CUBIC_TO, 2.89f, 16, 2, 15.1f, 2, 13.99f,
+V_LINE_TO, 6.01f,
+CLOSE,
+MOVE_TO, 5, 6,
+R_H_LINE_TO, 10,
+R_V_LINE_TO, 8,
+H_LINE_TO, 5,
+V_LINE_TO, 6,
+CLOSE,
+END