Rename is_chromeos in chrome/src.

ui/display/util/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/ui.gni")
 
 component("util") {
   output_name = "display_util"
   sources = [
     "display_util.cc",
@@ skipping 15 matching lines @@
     sources += [
       "x11/edid_parser_x11.cc",
       "x11/edid_parser_x11.h",
     ]
     configs += [
       "//build/config/linux:x11",
       "//build/config/linux:xrandr",
     ]
     deps += [ "//ui/gfx/x" ]
   }
-  if (is_chromeos) {
+  if (use_cros_fe) {
     deps += [ "//ui/display/types" ]
   }
 }