Load ash_sysui resources with ResourceLoader.

ash/mus/BUILD.gn

Index: ash/mus/BUILD.gn
diff --git a/ash/mus/BUILD.gn b/ash/mus/BUILD.gn
index d86ab228dd3a9660986c0891ad3176caff3e74f6..214be141fe5e0f437d43dcf47808191cd7d690cc 100644
--- a/ash/mus/BUILD.gn
+++ b/ash/mus/BUILD.gn
@@ -31,6 +31,7 @@ source_set("lib") {
     "//components/mus/common:mus_common",
     "//components/mus/public/cpp",
     "//components/mus/public/interfaces",
+    "//components/resource_provider/public/cpp",
     "//components/user_manager",
     "//device/bluetooth",
     "//mash/wm/public/interfaces",
@@ -56,9 +57,9 @@ source_set("lib") {
   ]
 
   data_deps = [
-    "//ash/strings:ash_test_strings",
-    "//ash/resources:ash_test_resources_100_percent",
-    "//ash/resources:ash_test_resources_200_percent",
+    ":resources_strings",
+    ":resources_100",
+    ":resources_200",
   ]
 
   if (is_chromeos) {
@@ -86,3 +87,35 @@ mojo_native_application("mus") {
     "//components/mus",
   ]
 }
+
+resource_out_dir = "$root_out_dir/$mojo_application_subdir/ash_sysui/resources"
+
+repack("resources_strings") {
+  sources = [
+    "$root_out_dir/ash_test_strings.pak",
+  ]
+  output = "$resource_out_dir/ash_resources_strings.pak"
+  deps = [
+    "//ash/strings:ash_test_strings",
+  ]
+}
+
+repack("resources_100") {
+  sources = [
+    "$root_out_dir/ash_test_resources_100_percent.pak",
+  ]
+  output = "$resource_out_dir/ash_resources_100_percent.pak"
+  deps = [
+    "//ash/resources:ash_test_resources_100_percent",
+  ]
+}
+
+repack("resources_200") {
+  sources = [
+    "$root_out_dir/ash_test_resources_200_percent.pak",
+  ]
+  output = "$resource_out_dir/ash_resources_200_percent.pak"
+  deps = [
+    "//ash/resources:ash_test_resources_200_percent",
+  ]
+}