chromeos: turn on simplified display management for mash

chrome/browser/chromeos/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/features.gni")
 import("//build/config/ui.gni")
 import("//extensions/features/features.gni")
 import("//media/media_options.gni")
 import("//printing/features/features.gni")
 import("//third_party/protobuf/proto_library.gni")
@@ skipping 384 matching lines @@
     "customization/customization_wallpaper_downloader.cc",
     "customization/customization_wallpaper_downloader.h",
     "dbus/chrome_console_service_provider_delegate.cc",
     "dbus/chrome_console_service_provider_delegate.h",
     "dbus/chrome_display_power_service_provider_delegate.cc",
     "dbus/chrome_display_power_service_provider_delegate.h",
     "dbus/chrome_proxy_resolution_service_provider_delegate.cc",
     "dbus/chrome_proxy_resolution_service_provider_delegate.h",
     "dbus/kiosk_info_service_provider.cc",
     "dbus/kiosk_info_service_provider.h",
-    "dbus/mus_console_service_provider_delegate.cc",
-    "dbus/mus_console_service_provider_delegate.h",
     "dbus/screen_lock_service_provider.cc",
     "dbus/screen_lock_service_provider.h",
     "device/input_service_proxy.cc",
     "device/input_service_proxy.h",
     "device_uma.cc",
     "device_uma.h",
     "display/display_configuration_observer.cc",
     "display/display_configuration_observer.h",
     "display/display_preferences.cc",
     "display/display_preferences.h",
@@ skipping 1456 matching lines @@
     "policy/proto/chrome_device_policy.proto",
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
   ]
 }