mojo: Run validation tests on java

mojo/public/cpp/bindings/tests/validation_unittest.cc

Index: mojo/public/cpp/bindings/tests/validation_unittest.cc
diff --git a/mojo/public/cpp/bindings/tests/validation_unittest.cc b/mojo/public/cpp/bindings/tests/validation_unittest.cc
index 6463a9e7b3b339f96a74b8029073eb335ce7e559..35a3e525463beb2221fc3ef09b97bed5266bc2c4 100644
--- a/mojo/public/cpp/bindings/tests/validation_unittest.cc
+++ b/mojo/public/cpp/bindings/tests/validation_unittest.cc
@@ -391,6 +391,15 @@ TEST_F(ValidationTest, Conformance) {
   RunValidationTests("conformance_", validators.GetHead());
 }
 
+TEST_F(ValidationTest, NotImplemented) {
+  DummyMessageReceiver dummy_receiver;
+  mojo::internal::FilterChain validators(&dummy_receiver);
+  validators.Append<mojo::internal::MessageHeaderValidator>();
+  validators.Append<ConformanceTestInterface::RequestValidator_>();
+
+  RunValidationTests("not_implemented_", validators.GetHead());
+}
+
 TEST_F(ValidationIntegrationTest, InterfacePtr) {
   // Test that InterfacePtr<X> applies the correct validators and they don't
   // conflict with each other: