Add bluetooth device type icons on MD system tray.

ash/resources/vector_icons/system_menu_computer.icon

Index: ash/resources/vector_icons/system_menu_computer.icon
diff --git a/ash/resources/vector_icons/system_menu_computer.icon b/ash/resources/vector_icons/system_menu_computer.icon
new file mode 100644
index 0000000000000000000000000000000000000000..dbaeeab1f182b37100e4ba62c935b7e444b914d4
--- /dev/null
+++ b/ash/resources/vector_icons/system_menu_computer.icon
@@ -0,0 +1,26 @@
+// 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, 32, 29,

[fukino, 2016/09/29 16:27:36]

I created icon files by 
1) Download SVGs from Seb's folder.
2) Optimize SVGs https://jakearchibald.github.io/svgomg/ using default options.
3) Convert them to *.icon using http://evanstade.github.io/skiafy/.
4) Manually remove the first path in *.icon files. The path is like as follows.
It looks unnecessary and I had to remove it to show the icons properly.

MOVE_TO, 0, 0,
R_H_LINE_TO, 40,
R_V_LINE_TO, 40,
H_LINE_TO, 0,
CLOSE,

I'm not confident with step 4. Is there something wrong?

[tdanderson, 2016/09/29 18:54:39]

Yes, step 4 is correct - without it you probably noticed that the colors were
inverted. See "Why is the outside of my icon being filled instead of the
inside?" in
https://www.chromium.org/developers/how-tos/vectorized-icons-in-native-chrome-ui

[fukino, 2016/09/30 02:43:49]

Thank you for the information.
I didn't noticed that it was already documented. Sorry!

+R_CUBIC_TO, 1.65f, 0, 2.99f, -1.35f, 2.99f, -3,
+LINE_TO, 35, 11,
+R_CUBIC_TO, 0, -1.65f, -1.35f, -3, -3, -3,
+H_LINE_TO, 8,
+R_CUBIC_TO, -1.65f, 0, -3, 1.35f, -3, 3,
+R_V_LINE_TO, 15,
+R_CUBIC_TO, 0, 1.65f, 1.35f, 3, 3, 3,
+H_LINE_TO, 2,
+R_V_LINE_TO, 3,
+R_H_LINE_TO, 36,
+R_V_LINE_TO, -3,
+R_H_LINE_TO, -6,
+CLOSE,
+MOVE_TO, 8, 11,
+R_H_LINE_TO, 24,
+R_V_LINE_TO, 15,
+H_LINE_TO, 8,
+V_LINE_TO, 11,
+CLOSE,
+END