[Material][Mac] Update the User Account Button

ui/gfx/vector_icons/user_account_avatar.icon

Index: ui/gfx/vector_icons/user_account_avatar.icon
diff --git a/ui/gfx/vector_icons/user_account_avatar.icon b/ui/gfx/vector_icons/user_account_avatar.icon
new file mode 100644
index 0000000000000000000000000000000000000000..7a614704059479f87ee2ec96b4547a489425c7e8
--- /dev/null
+++ b/ui/gfx/vector_icons/user_account_avatar.icon
@@ -0,0 +1,24 @@
+// 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, 20.52f, 3,
+CUBIC_TO, 10.62f, 3, 3, 10.62f, 3, 20.52f,
+CUBIC_TO, 3, 29.39f, 10.62f, 37, 20.52f, 37,
+CUBIC_TO, 29.39f, 37, 37, 29.38f, 37, 20.52f,
+CUBIC_TO, 37, 10.62f, 29.38f, 3, 20.52f, 3,
+CLOSE,
+R_MOVE_TO, 0, 5.15f,
+R_CUBIC_TO, 2.85f, 0, 5.15f, 2.3f, 5.15f, 5.15f,
+R_CUBIC_TO, 0, 2.85f, -2.3f, 5.15f, -5.15f, 5.15f,
+R_CUBIC_TO, -2.85f, 0, -5.15f, -2.3f, -5.15f, -5.15f,
+R_CUBIC_TO, 0, -2.85f, 2.3f, -5.15f, 5.15f, -5.15f,
+CLOSE,
+R_MOVE_TO, 0, 23.7f,
+R_CUBIC_TO, -4.29f, 0, -8.09f, -2.09f, -10.3f, -5.15f,
+R_CUBIC_TO, 0.05f, -3.37f, 6.87f, -5.15f, 10.3f, -5.15f,
+R_CUBIC_TO, 3.42f, 0, 10.25f, 1.78f, 10.3f, 5.15f,
+R_CUBIC_TO, -2.21f, 3.06f, -6.01f, 5.15f, -10.3f, 5.15f,
+CLOSE,
+END