Accessibility: Fix color enhancer filtering

ui/accessibility/extensions/BUILD.gn

 # Copyright 2017 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("//tools/grit/grit_rule.gni")
 
 group("extensions") {
   deps = [
     ":colorenhancer",
   ]
@@ skipping 76 matching lines @@
   "colorenhancer/src/common.js",
   "colorenhancer/src/cvd.js",
   "colorenhancer/src/popup.html",
   "colorenhancer/src/popup.js",
   "colorenhancer/src/storage.js",
   "colorenhancer/res/cvd-128.png",
   "colorenhancer/res/cvd-16.png",
   "colorenhancer/res/cvd-19.png",
   "colorenhancer/res/cvd-38.png",
   "colorenhancer/res/cvd-48.png",
-  "colorenhancer/res/cvd.css",
   "colorenhancer/res/setup.css",
 ]
 
 copy("colorenhancer_copy") {
   sources = colorenhancer_files
   outputs = [
     "$root_out_dir/{{source_target_relative}}",
   ]
 }