Mojo: Report bindings validation errors via MojoNotifyBadMessage

mojo/public/cpp/bindings/lib/control_message_handler.cc

Index: mojo/public/cpp/bindings/lib/control_message_handler.cc
diff --git a/mojo/public/cpp/bindings/lib/control_message_handler.cc b/mojo/public/cpp/bindings/lib/control_message_handler.cc
index 1bcd87daf9ef56103b30255ec0a5ce83c2fd51ad..633e95ff646d6cf293639931518bf15e7456c5fb 100644
--- a/mojo/public/cpp/bindings/lib/control_message_handler.cc
+++ b/mojo/public/cpp/bindings/lib/control_message_handler.cc
@@ -29,7 +29,7 @@ ControlMessageHandler::ControlMessageHandler(uint32_t interface_version)
 ControlMessageHandler::~ControlMessageHandler() {
 }
 
-bool ControlMessageHandler::Accept(Message* message) {
+bool ControlMessageHandler::Accept(Message* message, Error* error) {
   if (message->header()->name == kRunOrClosePipeMessageId)
     return RunOrClosePipe(message);
 
@@ -39,7 +39,8 @@ bool ControlMessageHandler::Accept(Message* message) {
 
 bool ControlMessageHandler::AcceptWithResponder(
     Message* message,
-    MessageReceiverWithStatus* responder) {
+    MessageReceiverWithStatus* responder,
+    Error* error) {
   if (message->header()->name == kRunMessageId)
     return Run(message, responder);
 
@@ -64,7 +65,9 @@ bool ControlMessageHandler::Run(Message* message,
   Serialize<RunResponseMessageParamsPtr>(response_params_ptr, builder.buffer(),
                                          &response_params, &context_);
   response_params->EncodePointers();
-  bool ok = responder->Accept(builder.message());
+
+  Error send_error;
+  bool ok = responder->Accept(builder.message(), &send_error);
   ALLOW_UNUSED_LOCAL(ok);
   delete responder;