Avoid InterfaceImpl in //services/test_service

R=viettrungluu@chromium.org

Review URL: https://codereview.chromium.org/924543003
diff --git a/services/test_service/test_service_application.cc b/services/test_service/test_service_application.cc
index 2d11e8e..67da318 100644
--- a/services/test_service/test_service_application.cc
+++ b/services/test_service/test_service_application.cc
@@ -36,7 +36,7 @@
 
 void TestServiceApplication::Create(ApplicationConnection* connection,
                                     InterfaceRequest<TestService> request) {
-  BindToRequest(new TestServiceImpl(app_impl_, this), &request);
+  new TestServiceImpl(app_impl_, this, request.Pass());
   AddRef();
 }