Move PlatformSceen to services/ui/display.

services/ui/ws/BUILD.gn

Index: services/ui/ws/BUILD.gn
diff --git a/services/ui/ws/BUILD.gn b/services/ui/ws/BUILD.gn
index a2d3ad75b1ec9b145286e0ac533a5e311143a2e6..879e5864586a3ca1737f6e0dfcbc880f5fb3b807 100644
--- a/services/ui/ws/BUILD.gn
+++ b/services/ui/ws/BUILD.gn
@@ -46,9 +46,6 @@ source_set("lib") {
     "platform_display_factory.h",
     "platform_display_init_params.cc",
     "platform_display_init_params.h",
-    "platform_screen.h",
-    "platform_screen_impl.cc",
-    "platform_screen_impl.h",
     "scheduled_animation_group.cc",
     "scheduled_animation_group.h",
     "server_window.cc",
@@ -114,6 +111,7 @@ source_set("lib") {
     "//services/shell/public/interfaces",
     "//services/tracing/public/cpp",
     "//services/ui/common:mus_common",
+    "//services/ui/display",
     "//services/ui/gles2",
     "//services/ui/public/interfaces",
     "//services/ui/surfaces",
@@ -132,17 +130,6 @@ source_set("lib") {
   ]
 
   if (use_ozone) {
-    if (is_chromeos) {
-      sources -= [
-        "platform_screen_impl.cc",
-        "platform_screen_impl.h",
-      ]
-      sources += [
-        "platform_screen_impl_ozone.cc",
-        "platform_screen_impl_ozone.h",
-      ]
-    }
-
     public_deps += [ "//ui/ozone:ozone" ]
   }
 }