Revert of Mojo C++ bindings: support sync methods - part 2

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

Index: mojo/public/cpp/bindings/lib/interface_ptr_state.h
diff --git a/mojo/public/cpp/bindings/lib/interface_ptr_state.h b/mojo/public/cpp/bindings/lib/interface_ptr_state.h
index b2093bb871ef412c89a5d9e082c8a27ecbc13138..a175edde5bbf208f85003cd273efb03c27ba22ee 100644
--- a/mojo/public/cpp/bindings/lib/interface_ptr_state.h
+++ b/mojo/public/cpp/bindings/lib/interface_ptr_state.h
@@ -172,8 +172,7 @@
     filters.Append<MessageHeaderValidator>();
     filters.Append<typename Interface::ResponseValidator_>();
 
-    router_ =
-        new Router(std::move(handle_), std::move(filters), false, waiter_);
+    router_ = new Router(std::move(handle_), std::move(filters), waiter_);
     waiter_ = nullptr;
 
     proxy_ = new Proxy(router_);