[Mac] Touch Bar support for default browser window state

chrome/app/vector_icons/new_tab_mac_touchbar.icon

Index: chrome/app/vector_icons/new_tab_mac_touchbar.icon
diff --git a/chrome/app/vector_icons/new_tab_mac_touchbar.icon b/chrome/app/vector_icons/new_tab_mac_touchbar.icon
new file mode 100644
index 0000000000000000000000000000000000000000..51bc0f4df11bf5eac4d8b612ab7ffb549595ce70
--- /dev/null
+++ b/chrome/app/vector_icons/new_tab_mac_touchbar.icon
@@ -0,0 +1,26 @@
+// Copyright 2017 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, 36,

[Evan Stade, 2017/02/18 00:01:44]

the new tab icon that I see on the bug was provided in a 60x60 version. Where
did the 36 come from? Did you get this from go/icons ("add circle")? If so, the
convention is to give it the generic name ("add_circle.icon").

But I don't think this is right, because you're scaling this down from 36 to 16
dip (32px for retina -- I don't know what scale factor the touchbar screen
uses). All the other icons you're using are optimized for display at exactly
16/32px. This one is going to wind up with blurry lines because vector graphics
scale well but don't guarantee that strokes are aligned to pixel boundaries. I
think you need/want a designer to create a version optimized for 32px.

[spqchan, 2017/02/18 05:12:33]

The icon was strange. It was 60x60 vector, but the icon was actually 36x36 with
enough padding to fill out the rest of the 60x60x. I got rid of the spacing and
just ended up with this size. I'll reach for the designer and then get this
fixed in a follow up CL. Thanks for letting me know :)

+MOVE_TO, 18, 0,
+R_CUBIC_TO, -9.94f, 0, -18, 8.06f, -18, 18,
+R_CUBIC_TO, 0, 9.94f, 8.06f, 18, 18, 18,
+R_CUBIC_TO, 9.94f, 0, 18, -8.06f, 18, -18,
+R_CUBIC_TO, 0, -9.94f, -8.06f, -18, -18, -18,
+CLOSE,
+R_MOVE_TO, 9, 19.8f,
+R_H_LINE_TO, -7.2f,
+V_LINE_TO, 27,
+R_H_LINE_TO, -3.6f,
+R_V_LINE_TO, -7.2f,
+H_LINE_TO, 9,
+R_V_LINE_TO, -3.6f,
+R_H_LINE_TO, 7.2f,
+V_LINE_TO, 9,
+R_H_LINE_TO, 3.6f,
+R_V_LINE_TO, 7.2f,
+H_LINE_TO, 27,
+R_V_LINE_TO, 3.6f,
+CLOSE,
+END