Add bluetooth device type icons on MD system tray.

ash/resources/vector_icons/system_menu_gamepad.icon

Index: ash/resources/vector_icons/system_menu_gamepad.icon
diff --git a/ash/resources/vector_icons/system_menu_gamepad.icon b/ash/resources/vector_icons/system_menu_gamepad.icon
new file mode 100644
index 0000000000000000000000000000000000000000..76c89f242491cb7d50632b7b33b5ea6ea08cb0e6
--- /dev/null
+++ b/ash/resources/vector_icons/system_menu_gamepad.icon
@@ -0,0 +1,34 @@
+// 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, 25, 13.06f,
+V_LINE_TO, 4,
+H_LINE_TO, 15,
+R_V_LINE_TO, 9.06f,
+LINE_TO, 20, 18,
+R_LINE_TO, 5, -4.94f,
+CLOSE,
+MOVE_TO, 13.06f, 15,
+H_LINE_TO, 4,
+R_V_LINE_TO, 10,
+R_H_LINE_TO, 9.06f,
+LINE_TO, 18, 20,
+R_LINE_TO, -4.94f, -5,
+CLOSE,
+MOVE_TO, 15, 26.94f,
+V_LINE_TO, 36,
+R_H_LINE_TO, 10,
+R_V_LINE_TO, -9.06f,
+LINE_TO, 20, 22,
+R_LINE_TO, -5, 4.94f,
+CLOSE,
+MOVE_TO, 26.94f, 15,
+LINE_TO, 22, 20,
+R_LINE_TO, 4.94f, 5,
+H_LINE_TO, 36,
+V_LINE_TO, 15,
+R_H_LINE_TO, -9.06f,
+CLOSE,
+END