Enforce Capability Filter provided in manifest

components/mus/ws/BUILD.gn

Index: components/mus/ws/BUILD.gn
diff --git a/components/mus/ws/BUILD.gn b/components/mus/ws/BUILD.gn
index 59d1e8283c6dc81f8a5f04000b0b8a56c26af5d4..53eb3b49be68fcc5238b91590141be7d4750ca3c 100644
--- a/components/mus/ws/BUILD.gn
+++ b/components/mus/ws/BUILD.gn
@@ -5,6 +5,7 @@
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//mojo/public/mojo_application.gni")
+import("//mojo/public/mojo_application_manifest.gni")
 
 source_set("lib") {
   sources = [
@@ -183,6 +184,7 @@ mojo_native_application("apptests") {
   ]
 
   deps = [
+    ":manifest",
     ":test_support",
     "//base",
     "//base/test:test_config",
@@ -207,3 +209,8 @@ mojo_native_application("apptests") {
     deps += [ "//tools/xdisplaycheck" ]
   }
 }
+
+mojo_application_manifest("manifest") {
+  application_name = "mus_apptests"
+  source = "apptest_manifest.json"
+}