Port Mojo's sample_service.cc to JavaScript

mojo/public/bindings/js/test/run_js_tests.cc

Index: mojo/public/bindings/js/test/run_js_tests.cc
diff --git a/mojo/public/bindings/js/test/run_js_tests.cc b/mojo/public/bindings/js/test/run_js_tests.cc
index 00f7574f328487001d7f67636f7ea391a8ab3393..c558547554aeb83267f009406e91e18a1129b169 100644
--- a/mojo/public/bindings/js/test/run_js_tests.cc
+++ b/mojo/public/bindings/js/test/run_js_tests.cc
@@ -45,6 +45,18 @@ TEST(JSTest, codec) {
   RunTest("codec_unittests.js");
 }
 
+TEST(JSTest, sample_test) {
+  base::FilePath path;
+  PathService::Get(base::DIR_SOURCE_ROOT, &path);
+  path = path.AppendASCII("mojo")
+             .AppendASCII("public")
+             .AppendASCII("bindings")
+             .AppendASCII("sample")
+             .AppendASCII("sample_test.js");
+  TestRunnerDelegate delegate;
+  gin::RunTestFromFile(path, &delegate);
+}
+
 }  // namespace
 }  // namespace js
 }  // namespace mojo