Mojo: Report bindings validation errors via MojoNotifyBadMessage

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

Index: mojo/public/cpp/bindings/tests/sample_service_unittest.cc
diff --git a/mojo/public/cpp/bindings/tests/sample_service_unittest.cc b/mojo/public/cpp/bindings/tests/sample_service_unittest.cc
index 609a1dd18b5b88fea4bce551c95315575f805770..3392b2cd3f2f44d51a2917d10962e1fb6e0ed90f 100644
--- a/mojo/public/cpp/bindings/tests/sample_service_unittest.cc
+++ b/mojo/public/cpp/bindings/tests/sample_service_unittest.cc
@@ -291,7 +291,7 @@ class ServiceProxyImpl : public ServiceProxy {
 
 class SimpleMessageReceiver : public mojo::MessageReceiverWithResponder {
  public:
-  bool Accept(mojo::Message* message) override {
+  bool Accept(mojo::Message* message, mojo::Error* error) override {
     // Imagine some IPC happened here.
 
     if (g_dump_message_as_hex) {
@@ -305,11 +305,12 @@ class SimpleMessageReceiver : public mojo::MessageReceiverWithResponder {
 
     ServiceStub stub;
     stub.set_sink(&impl);
-    return stub.Accept(message);
+    return stub.Accept(message, error);
   }
 
   bool AcceptWithResponder(mojo::Message* message,
-                           mojo::MessageReceiver* responder) override {
+                           mojo::MessageReceiver* responder,
+                           mojo::Error* error) override {
     return false;
   }
 };