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

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

Index: ui/gfx/vector_icons/palette_tray_icon_default.1x.icon
diff --git a/ui/gfx/vector_icons/palette_tray_icon_default.1x.icon b/ui/gfx/vector_icons/palette_tray_icon_default.1x.icon
deleted file mode 100644
index ff7ea2dcf37634c86f477a74450fb0a5ad365892..0000000000000000000000000000000000000000
--- a/ui/gfx/vector_icons/palette_tray_icon_default.1x.icon
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2015 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, 12.24f, 2.2f,
-R_LINE_TO, 1.56f, 1.55f,
-R_CUBIC_TO, 0.26f, 0.26f, 0.27f, 0.69f, 0.01f, 0.95f,
-R_LINE_TO, -3.58f, 3.57f,
-R_LINE_TO, -2.51f, -2.51f,
-R_LINE_TO, 1.69f, -1.69f,
-R_LINE_TO, -0.49f, -0.49f,
-R_LINE_TO, -3.77f, 3.77f,
-R_LINE_TO, -0.93f, -0.93f,
-R_LINE_TO, 4.24f, -4.24f,
-R_CUBIC_TO, 0.26f, -0.26f, 0.69f, -0.25f, 0.95f, 0.01f,
-R_LINE_TO, 0.95f, 0.94f,
-R_LINE_TO, 0.95f, -0.94f,
-R_CUBIC_TO, 0.25f, -0.26f, 0.68f, -0.26f, 0.94f, 0,
-CLOSE,
-MOVE_TO, 2, 11.5f,
-V_LINE_TO, 14,
-R_H_LINE_TO, 2.49f,
-LINE_TO, 9.52f, 8.98f,
-LINE_TO, 7.02f, 6.48f,
-LINE_TO, 2, 11.5f,
-CLOSE,
-END