Expand and split DisplayController mojom.

services/ui/public/interfaces/display/BUILD.gn

Index: services/ui/public/interfaces/display/BUILD.gn
diff --git a/services/ui/public/interfaces/display/BUILD.gn b/services/ui/public/interfaces/display/BUILD.gn
index e46e418acb7c343edd8deb794bd4a6586dcfdff6..02e9cc0aae0b121b3c7746ac667241bafa32d9bd 100644
--- a/services/ui/public/interfaces/display/BUILD.gn
+++ b/services/ui/public/interfaces/display/BUILD.gn
@@ -8,13 +8,12 @@ mojom("display") {
   sources = [
     "display.mojom",
     "display_controller.mojom",
+    "test_display_controller.mojom",
   ]
 
   public_deps = [
     "//ui/gfx/geometry/mojo",
   ]
-
-  use_new_wrapper_types = false
 }
 
 mojom("test_interfaces") {
@@ -25,6 +24,4 @@ mojom("test_interfaces") {
   public_deps = [
     ":display",
   ]
-
-  use_new_wrapper_types = false
 }