Rename is_chromeos in chrome/src.

ui/base/ime/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 component("ime") {
   output_name = "ui_base_ime"
   sources = [
@@ skipping 111 matching lines @@
 
   if (!toolkit_views && !use_aura) {
     sources -= [
       "input_method_factory.cc",
       "input_method_factory.h",
       "input_method_minimal.cc",
       "input_method_minimal.h",
     ]
   }
 
-  if (is_chromeos) {
+  if (use_cros_fe) {
     deps += [
       "//chromeos",
       "//chromeos/ime:gencode",
       "//ui/events:dom_keycode_converter",
     ]
     if (!use_ozone) {
       sources -= [
         "chromeos/ime_keyboard_ozone.cc",
         "chromeos/ime_keyboard_ozone.h",
       ]
@@ skipping 26 matching lines @@
     libs = [ "imm32.lib" ]
   }
 
   if (use_ozone) {
     deps += [
       "//ui/ozone",
       "//ui/events/ozone:events_ozone_layout",
     ]
   }
 }