Move display preference code from ash/display/ to ui/display/manager/.

ui/display/manager/BUILD.gn

 # Copyright 2016 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")
 
 component("manager") {
   sources = [
     "chromeos/apply_content_protection_task.cc",
     "chromeos/apply_content_protection_task.h",
@@ skipping 16 matching lines @@
     "chromeos/touchscreen_util.h",
     "chromeos/update_display_configuration_task.cc",
     "chromeos/update_display_configuration_task.h",
     "display_layout_store.cc",
     "display_layout_store.h",
     "display_manager.cc",
     "display_manager.h",
     "display_manager_export.h",
     "display_manager_utilities.cc",
     "display_manager_utilities.h",
+    "display_pref_util.h",
+    "json_converter.cc",
+    "json_converter.h",
     "managed_display_info.cc",
     "managed_display_info.h",
   ]
 
   public_deps = [
     "//ui/display",
   ]
 
   deps = [
     "//base",
@@ skipping 30 matching lines @@
     configs += [
       "//build/config/linux:x11",
       "//build/config/linux:xext",
       "//build/config/linux:xi",
       "//build/config/linux:xrandr",
     ]
 
     deps += [ "//ui/events/platform" ]
   }
 }