Rename is_chromeos in chrome/src.

ui/events/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")
 
 static_library("dom_keycode_converter") {
   sources = [
     "keycodes/dom/dom_code.h",
@@ skipping 125 matching lines @@
     configs += [
       "//build/config/linux:glib",
       "//build/config/linux:x11",
     ]
     deps += [
       "//ui/events/devices",
       "//ui/gfx/x",
     ]
   }
 
-  if (!is_chromeos && is_linux) {
+  if (is_linux && !use_cros_fe) {
     sources += [
       "linux/text_edit_command_auralinux.cc",
       "linux/text_edit_command_auralinux.h",
       "linux/text_edit_key_bindings_delegate_auralinux.cc",
       "linux/text_edit_key_bindings_delegate_auralinux.h",
     ]
   }
 
   if (use_ozone) {
     sources += [ "ozone/events_ozone.cc" ]
@@ skipping 230 matching lines @@
       "//ui/events/ozone:events_ozone",
       "//ui/events/ozone:events_ozone_evdev",
       "//ui/events/ozone:events_ozone_layout",
     ]
   }
 
   if (use_aura) {
     sources += [ "gestures/gesture_provider_aura_unittest.cc" ]
   }
 }