Move a bunch of ash-only vector icons to ash/.

ui/gfx/vector_icons/system_menu_supervised_user.icon

Index: ui/gfx/vector_icons/system_menu_supervised_user.icon
diff --git a/ui/gfx/vector_icons/system_menu_supervised_user.icon b/ui/gfx/vector_icons/system_menu_supervised_user.icon
deleted file mode 100644
index f93efb2ee506006f337c76e87e266cc4893b2f6e..0000000000000000000000000000000000000000
--- a/ui/gfx/vector_icons/system_menu_supervised_user.icon
+++ /dev/null
@@ -1,32 +0,0 @@
-// 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, 27.65f, 20.17f,
-R_ARC_TO, 4.22f, 4.22f, 0, 1, 0, 0, -8.45f,
-R_CUBIC_TO, -2.35f, 0, -4.25f, 1.89f, -4.25f, 4.23f,
-R_CUBIC_TO, 0, 2.33f, 1.9f, 4.23f, 4.25f, 4.23f,
-CLOSE,
-R_MOVE_TO, -12.75f, -1.69f,
-R_ARC_TO, 5.06f, 5.06f, 0, 0, 0, 5.08f, -5.07f,
-ARC_TO, 5.06f, 5.06f, 0, 0, 0, 14.9f, 8.33f,
-R_CUBIC_TO, -2.82f, 0, -5.1f, 2.27f, -5.1f, 5.07f,
-R_CUBIC_TO, 0, 2.8f, 2.28f, 5.07f, 5.1f, 5.07f,
-CLOSE,
-R_MOVE_TO, 12.6f, 5.07f,
-R_CUBIC_TO, -3.16f, 0, -9.5f, 1.56f, -9.5f, 4.65f,
-V_LINE_TO, 32,
-R_H_LINE_TO, 19,
-R_V_LINE_TO, -3.8f,
-R_CUBIC_TO, 0, -3.09f, -6.34f, -4.65f, -9.5f, -4.65f,
-CLOSE,
-R_MOVE_TO, -12.6f, -1.69f,
-R_CUBIC_TO, -3.96f, 0, -11.9f, 1.98f, -11.9f, 5.92f,
-V_LINE_TO, 32,
-R_H_LINE_TO, 11.9f,
-R_V_LINE_TO, -3.8f,
-R_CUBIC_TO, 0, -1.44f, 0.56f, -3.95f, 4.03f, -5.87f,
-R_CUBIC_TO, -1.48f, -0.3f, -2.91f, -0.47f, -4.03f, -0.47f,
-CLOSE,
-END