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..10027cade3dbeedaab5c581627f002e2f2590575 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 +87,36 @@ mojo_native_application("mus") {
     "//components/mus",
   ]
 }
+
+resource_out_dir = "$root_out_dir/$mojo_application_subdir/ash_sysui/resources"

[sky, 2016/04/08 21:53:45]

Instead of outputting to this location you should should have the "mus" target
list the resources it needs in resources. This way they'll be copied correctly.

[kylechar, 2016/04/11 13:16:33]

Didn't realize that was a thing. Done. The only thing that seems concerning is
now the //ash/mus:lib target doesn't actually include in the resources it needs,
the //ash/mus target is what has them, so that could cause problems down the
line if someone else includes //ash/mus:lib?

[sky, 2016/04/11 15:00:30]

I think that's the common pattern, even for non-mus apps. The resources are
listed in the executable target. If there is a better way where resources can be
listed in any targets, it would be good to change it.

+
+#TODO(msw): Do not load 'test' resources (include sys lang?).
+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",
+  ]
+}