WIP: simplified display management in ash

mash/BUILD.gn

Index: mash/BUILD.gn
diff --git a/mash/BUILD.gn b/mash/BUILD.gn
index cc9224a29b19fbca0866b81889e0ec007413f8ca..5d6df240bf0ee436adffb3ef20bb3b08978d7274 100644
--- a/mash/BUILD.gn
+++ b/mash/BUILD.gn
@@ -27,6 +27,7 @@ group("all") {
   if (is_chromeos) {
     deps += [
       "//ash/autoclick/mus:accessibility_autoclick",
+      "//ash/mus/standalone:standalone_ash",
       "//ash/touch_hud/mus:touch_hud",
       "//mash:mash_unittests",
     ]
@@ -69,7 +70,10 @@ catalog("catalog") {
   catalog_deps = [ "//mash/example:catalog" ]
 
   if (is_chromeos) {
-    standalone_services += [ "//ash/mus:manifest" ]
+    standalone_services += [
+      "//ash/mus:manifest",
+      "//ash/mus/standalone:manifest",
+    ]
   }
 
   if (is_linux && !is_android) {