Mojo: Report bindings validation errors via MojoNotifyBadMessage

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

Index: mojo/public/cpp/bindings/lib/message.cc
diff --git a/mojo/public/cpp/bindings/lib/message.cc b/mojo/public/cpp/bindings/lib/message.cc
index 4274cc86cb12695c4d0bebd5ea3664e88d89a71c..9af2906e6822a9f81617d3b49465d8ad38695258 100644
--- a/mojo/public/cpp/bindings/lib/message.cc
+++ b/mojo/public/cpp/bindings/lib/message.cc
@@ -78,6 +78,10 @@ ScopedMessageHandle Message::TakeMojoMessage() {
   return new_message;
 }
 
+void Message::NotifyBadMessage(const std::string& error) {
+  buffer_->NotifyBadMessage(error);
+}
+
 void Message::CloseHandles() {
   for (std::vector<Handle>::iterator it = handles_.begin();
        it != handles_.end(); ++it) {