Rename is_chromeos in chrome/src.

ui/base/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 347 matching lines @@
   if (use_x11) {
     sources += [
       "x/x11_foreign_window_manager.cc",
       "x/x11_foreign_window_manager.h",
       "x/x11_menu_list.cc",
       "x/x11_menu_list.h",
       "x/x11_util.cc",
       "x/x11_util.h",
       "x/x11_util_internal.h",
     ]
-    if (!is_chromeos) {
+    if (!use_cros_fe) {
       sources += [
         "idle/idle_query_x11.cc",
         "idle/idle_query_x11.h",
         "idle/screensaver_window_finder_x11.cc",
         "idle/screensaver_window_finder_x11.h",
       ]
       configs += [ "//build/config/linux:xscrnsaver" ]
     }
     deps += [ "//ui/gfx/x" ]
   }
 
   if (!use_aura || !is_linux) {
     sources -= [ "resource/resource_bundle_auralinux.cc" ]
   }
 
   if (use_aura && is_win) {
     sources -= [ "dragdrop/drag_utils_aura.cc" ]
   }
 
   if (is_linux) {
     configs += [
       "//build/config/linux:fontconfig",
       "//build/config/linux:glib",
     ]
   }
 
-  if ((is_linux && !is_chromeos) || is_chromeos) {
+  if ((is_linux && !use_cros_fe) || use_cros_fe) {
     if (!toolkit_views && !use_aura) {
       sources -= [
         "dragdrop/drag_utils.cc",
         "dragdrop/drag_utils.h",
       ]
     }
   }
 
-  if (is_chromeos) {
+  if (use_cros_fe) {
     deps += [ "//chromeos" ]
     sources -= [ "idle/idle_linux.cc" ]
   }
 
-  if (is_chromeos || (use_aura && ((is_linux && !use_x11) || is_android))) {
+  if (use_cros_fe || (use_aura && ((is_linux && !use_x11) || is_android))) {
     sources += [
       "dragdrop/os_exchange_data_provider_aura.cc",
       "dragdrop/os_exchange_data_provider_aura.h",
     ]
   }
 
   libs = []
   if (is_win) {
     sources += [
       "cursor/cursor_loader_win.cc",
@@ skipping 51 matching lines @@
     configs += [ "//build/config/linux:x11" ]
   }
 
   if (use_aura) {
     if (use_x11) {
       sources += [
         "cursor/cursor_loader_x11.cc",
         "cursor/cursor_loader_x11.h",
         "cursor/cursor_x11.cc",
       ]
-      if (!is_chromeos) {
+      if (!use_cros_fe) {
         # These Aura X11 files aren't used on ChromeOS.
         sources += [
           "dragdrop/os_exchange_data_provider_aurax11.cc",
           "dragdrop/os_exchange_data_provider_aurax11.h",
         ]
       }
     }
     if (is_android) {
       sources += [ "cursor/cursor_loader_android.cc" ]
     }
@@ skipping 214 matching lines @@
     sources += [
       "ime/candidate_window_unittest.cc",
       "ime/chromeos/character_composer_unittest.cc",
       "ime/chromeos/composition_text_chromeos_unittest.cc",
       "ime/input_method_base_unittest.cc",
       "ime/input_method_chromeos_unittest.cc",
       "ime/remote_input_method_win_unittest.cc",
       "ime/win/imm32_manager_unittest.cc",
       "ime/win/tsf_input_scope_unittest.cc",
     ]
-    if (is_linux && use_aura && !is_chromeos) {
+    if (is_linux && use_aura && !use_cros_fe) {
       sources += [ "ime/input_method_auralinux_unittest.cc" ]
     }
     if (use_x11) {
       sources += [ "ime/composition_text_util_pango_unittest.cc" ]
     }
-    if (!use_x11 && is_chromeos) {
+    if (!use_x11 && use_cros_fe) {
       # These were already removed in the non-chromeos case.
       sources -= [ "ime/input_method_chromeos_unittest.cc" ]
     }
   }
 
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps = [
     "//base",
@@ skipping 77 matching lines @@
 
   if (use_aura || toolkit_views) {
     sources += [ "dragdrop/os_exchange_data_unittest.cc" ]
 
     deps += [
       "//ui/events",
       "//ui/events/platform",
     ]
   }
 
-  if (use_x11 && !is_chromeos) {
+  if (use_x11 && !use_cros_fe) {
     sources += [
       "dragdrop/os_exchange_data_provider_aurax11_unittest.cc",
       "x/selection_requestor_unittest.cc",
     ]
   }
 
-  if (is_chromeos) {
+  if (use_cros_fe) {
     deps += [
       "//chromeos",
       "//ui/events:dom_keycode_converter",
     ]
   }
 
   if (is_linux || is_mac || is_win) {
     # TODO(brettw): We should be able to depend on //ui/resources:ui_test_pak
     # instead of depending directly on the non-test .pak files, but depending
     # on ui_test_pak seems to have no effect.
@@ skipping 15 matching lines @@
   }
   if (is_mac) {
     data += [ "$root_out_dir/ui_unittests Framework.framework/" ]
 
     if (is_asan && symbol_level == 0) {
       data += [ "$root_out_dir/ui_base_unittests.dSYM/" ]
     }
   }
 }
 # TODO(GYP) Mac (ui_base_tests_bundle)