Migrate more vector icons to chrome/.

ui/gfx/vector_icons/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 
 action("aggregate_vector_icons") {
   visibility = [ ":*" ]
 
   script = "aggregate_vector_icons.py"
@@ skipping 24 matching lines @@
     "credit_card.icon",
     "default_favicon.icon",
     "eol.icon",
     "error_circle.icon",
     "extension.icon",
     "extension_crashed.icon",
     "file_download.icon",
     "file_download_incognito.1x.icon",
     "file_download_incognito.icon",
     "file_download_shelf.icon",
-    "find_next.1x.icon",
-    "find_next.icon",
-    "find_prev.1x.icon",
-    "find_prev.icon",
     "folder.1x.icon",
     "folder.icon",
     "folder_managed.1x.icon",
     "folder_managed.icon",
     "folder_supervised.1x.icon",
     "folder_supervised.icon",
     "fullscreen.icon",
     "globe.icon",
     "help_outline.icon",
     "image.icon",
@@ skipping 98 matching lines @@
     "../vector_icon_types.h",
     "../vector_icons_public.h",
   ]
 
   deps = [
     ":aggregate_vector_icons",
     "//base",
     "//skia",
   ]
 }