[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,
+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