Make gn check //{,mojo}/services/* pass

mojo/services/test_service/BUILD.gn

Index: mojo/services/test_service/BUILD.gn
diff --git a/mojo/services/test_service/BUILD.gn b/mojo/services/test_service/BUILD.gn
index 5ef05a112c0aa5a8ef6bde80070036a6236ac84f..138856a6e55cedc07472a305ee4c8bafa475f4ba 100644
--- a/mojo/services/test_service/BUILD.gn
+++ b/mojo/services/test_service/BUILD.gn
@@ -31,6 +31,8 @@ mojo_native_application("test_app") {
     "//mojo/public/c/system:for_shared_library",
     "//mojo/public/cpp/application",
     "//mojo/public/cpp/application:standalone",
+    "//mojo/public/cpp/bindings",
+    "//mojo/public/cpp/system",
     "//mojo/public/cpp/utility",
   ]
 }
@@ -54,6 +56,8 @@ mojo_native_application("test_request_tracker_app") {
     "//mojo/public/c/system:for_shared_library",
     "//mojo/public/cpp/application",
     "//mojo/public/cpp/application:standalone",
+    "//mojo/public/cpp/bindings",
+    "//mojo/public/cpp/system",
     "//mojo/public/cpp/utility",
   ]
 }