Mojo C++ bindings: always use MultiplexRouter with InterfacePtr/Binding.

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 dec6bd47436fa9e74a103529e3f778e47895c0f4..7147322a795295b0baed6c391cddf1bef1d30206 100644
--- a/mojo/public/cpp/bindings/lib/binding_state.h
+++ b/mojo/public/cpp/bindings/lib/binding_state.h
@@ -183,6 +183,7 @@ class MultiplexedBindingState {
                     scoped_refptr<base::SingleThreadTaskRunner> runner,
                     const char* interface_name,
                     std::unique_ptr<MessageReceiver> request_validator,
+                    bool passes_associated_kinds,
                     bool has_sync_methods,
                     MessageReceiverWithResponderStatus* stub,
                     uint32_t interface_version);
@@ -207,7 +208,8 @@ class BindingState<Interface, true> : public MultiplexedBindingState {
     MultiplexedBindingState::BindInternal(
         std::move(handle), runner, Interface::Name_,
         base::MakeUnique<typename Interface::RequestValidator_>(),
-        Interface::HasSyncMethods_, &stub_, Interface::Version_);
+        Interface::PassesAssociatedKinds_, Interface::HasSyncMethods_, &stub_,
+        Interface::Version_);
     stub_.serialization_context()->group_controller = router_;
   }