Rename is_chromeos in chrome/src.

ui/gfx/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")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
@@ skipping 352 matching lines @@
       "sys_color_change_listener.h",
     ]
   }
 
   # Linux.
   if (is_linux) {
     configs += [ "//build/config/linux:fontconfig" ]
   }
 
   # Chrome OS
-  if (is_chromeos) {
+  if (use_cros_fe) {
     # Robust JPEG decoding for the login screen.
     sources += [
       "chromeos/codec/jpeg_codec_robust_slow.cc",
       "chromeos/codec/jpeg_codec_robust_slow.h",
     ]
     deps += [ "//third_party/libjpeg" ]
   }
 
   if (!use_aura) {
     sources -= [ "screen_aura.cc" ]
@@ skipping 219 matching lines @@
       "display_change_notifier_unittest.cc",
     ]
   }
 
   if (use_aura) {
     sources -= [ "screen_unittest.cc" ]
   } else if (!is_ios) {
     sources -= [ "nine_image_painter_unittest.cc" ]
   }
 
-  if (is_chromeos) {
+  if (use_cros_fe) {
     sources += [ "chromeos/codec/jpeg_codec_robust_slow_unittest.cc" ]
   }
 
   if (is_win) {
     sources += [
       "color_profile_win_unittest.cc",
       "font_fallback_win_unittest.cc",
       "icon_util_unittest.cc",
       "icon_util_unittests.rc",
       "path_win_unittest.cc",
@@ skipping 17 matching lines @@
 if (is_android) {
   generate_jni("gfx_jni_headers") {
     sources = [
       "../android/java/src/org/chromium/ui/gfx/BitmapHelper.java",
       "../android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java",
       "../android/java/src/org/chromium/ui/gfx/ViewConfigurationHelper.java",
     ]
     jni_package = "gfx"
   }
 }