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

ui/gfx/vector_icons/system_tray_battery.1x.icon

Index: ui/gfx/vector_icons/system_tray_battery.1x.icon
diff --git a/ui/gfx/vector_icons/system_tray_battery.1x.icon b/ui/gfx/vector_icons/system_tray_battery.1x.icon
deleted file mode 100644
index e104c55f1471c4e2a8505bc75a8b8f2256dacf3d..0000000000000000000000000000000000000000
--- a/ui/gfx/vector_icons/system_tray_battery.1x.icon
+++ /dev/null
@@ -1,22 +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, 16,
-MOVE_TO, 5, 3,
-R_H_LINE_TO, 5.99f,
-R_CUBIC_TO, 0.55f, 0, 1, 0.43f, 1, 0.96f,
-R_V_LINE_TO, 9.09f,
-R_CUBIC_TO, 0, 0.53f, -0.45f, 0.96f, -1, 0.96f,
-H_LINE_TO, 5,
-CUBIC_TO, 4.45f, 14, 4, 13.57f, 4, 13.04f,
-V_LINE_TO, 3.96f,
-CUBIC_TO, 4, 3.43f, 4.45f, 3, 5, 3,
-CLOSE,
-MOVE_TO, 10, 2,
-R_V_LINE_TO, 1,
-H_LINE_TO, 6,
-V_LINE_TO, 2,
-R_H_LINE_TO, 4,
-CLOSE,
-END