Add bluetooth device type icons on MD system tray.

ash/resources/vector_icons/system_menu_mouse.icon

Index: ash/resources/vector_icons/system_menu_mouse.icon
diff --git a/ash/resources/vector_icons/system_menu_mouse.icon b/ash/resources/vector_icons/system_menu_mouse.icon
new file mode 100644
index 0000000000000000000000000000000000000000..1dfe048ad1ac28f0b88609421a634fa85e1ff76e
--- /dev/null
+++ b/ash/resources/vector_icons/system_menu_mouse.icon
@@ -0,0 +1,23 @@
+// 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, 40,
+MOVE_TO, 21, 4,
+R_V_LINE_TO, 12,
+R_H_LINE_TO, 11,
+R_CUBIC_TO, 0, -6.17f, -4.79f, -11.26f, -11, -12,
+CLOSE,
+MOVE_TO, 8, 24,
+R_CUBIC_TO, 0, 6.63f, 5.37f, 12, 12, 12,
+R_CUBIC_TO, 6.63f, 0, 12, -5.37f, 12, -12,
+R_V_LINE_TO, -6,
+H_LINE_TO, 8,
+R_V_LINE_TO, 6,
+CLOSE,
+MOVE_TO, 19, 4,
+R_CUBIC_TO, -6.21f, 0.74f, -11, 5.83f, -11, 12,
+R_H_LINE_TO, 11,
+V_LINE_TO, 4,
+CLOSE,
+END