cros: Use runtime stylus detection for ash palette.

chrome/browser/ui/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/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 1081 matching lines @@
       "webui/settings/chromeos/date_time_handler.cc",
       "webui/settings/chromeos/date_time_handler.h",
       "webui/settings/chromeos/device_keyboard_handler.cc",
       "webui/settings/chromeos/device_keyboard_handler.h",
       "webui/settings/chromeos/device_pointer_handler.cc",
       "webui/settings/chromeos/device_pointer_handler.h",
       "webui/settings/chromeos/device_power_handler.cc",
       "webui/settings/chromeos/device_power_handler.h",
       "webui/settings/chromeos/device_storage_handler.cc",
       "webui/settings/chromeos/device_storage_handler.h",
+      "webui/settings/chromeos/device_stylus_handler.cc",
+      "webui/settings/chromeos/device_stylus_handler.h",
       "webui/settings/chromeos/easy_unlock_settings_handler.cc",
       "webui/settings/chromeos/easy_unlock_settings_handler.h",
       "webui/settings/chromeos/fingerprint_handler.cc",
       "webui/settings/chromeos/fingerprint_handler.h",
       "webui/settings/chromeos/internet_handler.cc",
       "webui/settings/chromeos/internet_handler.h",
       "webui/settings/downloads_handler.cc",
       "webui/settings/downloads_handler.h",
       "webui/settings/extension_control_handler.cc",
       "webui/settings/extension_control_handler.h",
@@ skipping 2394 matching lines @@
       "test/test_confirm_bubble_model.cc",
       "test/test_confirm_bubble_model.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }