Add bluetooth device type icons on MD system tray.

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

Index: ash/resources/vector_icons/system_menu_mouse.1x.icon
diff --git a/ash/resources/vector_icons/system_menu_mouse.1x.icon b/ash/resources/vector_icons/system_menu_mouse.1x.icon
new file mode 100644
index 0000000000000000000000000000000000000000..252dd06863d293093317ab82e71ba7f1199f0fcf
--- /dev/null
+++ b/ash/resources/vector_icons/system_menu_mouse.1x.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, 20,
+MOVE_TO, 9.96f, 3,
+R_V_LINE_TO, 5,
+H_LINE_TO, 15,
+R_CUBIC_TO, 0, -2.57f, -2.2f, -4.69f, -5.04f, -5,
+CLOSE,
+MOVE_TO, 4, 12,
+R_CUBIC_TO, 0, 3.32f, 2.46f, 6, 5.5f, 6,
+R_CUBIC_TO, 3.04f, 0, 5.5f, -2.68f, 5.5f, -6,
+V_LINE_TO, 9,
+H_LINE_TO, 4,
+R_V_LINE_TO, 3,
+CLOSE,
+R_MOVE_TO, 5.04f, -9,
+CUBIC_TO, 6.2f, 3.31f, 4, 5.43f, 4, 8,
+R_H_LINE_TO, 5.04f,
+V_LINE_TO, 3,
+CLOSE,
+END