Mojo: Report bindings validation errors via MojoNotifyBadMessage

mojo/public/cpp/bindings/lib/binding_state.h

Index: mojo/public/cpp/bindings/lib/binding_state.h
diff --git a/mojo/public/cpp/bindings/lib/binding_state.h b/mojo/public/cpp/bindings/lib/binding_state.h
index 4f4185a515c39debcce02079cdeaa4407648a443..93030878122404431f2bcfafa635bd986d6d59b6 100644
--- a/mojo/public/cpp/bindings/lib/binding_state.h
+++ b/mojo/public/cpp/bindings/lib/binding_state.h
@@ -50,7 +50,7 @@ class BindingState<Interface, false> {
             scoped_refptr<base::SingleThreadTaskRunner> runner) {
     DCHECK(!router_);
     internal::FilterChain filters;
-    filters.Append<internal::MessageHeaderValidator>();
+    filters.Append<internal::MessageHeaderValidator>(Interface::Name_);
     filters.Append<typename Interface::RequestValidator_>();
 
     router_ =
@@ -146,6 +146,7 @@ class BindingState<Interface, true> {
     DCHECK(!router_);
 
     router_ = new internal::MultiplexRouter(false, std::move(handle), runner);
+    router_->SetMasterInterfaceName(Interface::Name_);
     stub_.serialization_context()->router = router_;
 
     endpoint_client_.reset(new internal::InterfaceEndpointClient(