Mojo C++ bindings: introduce an optional array to store transferred interface IDs in messages.

mojo/public/cpp/bindings/tests/bindings_perftest.cc

Index: mojo/public/cpp/bindings/tests/bindings_perftest.cc
diff --git a/mojo/public/cpp/bindings/tests/bindings_perftest.cc b/mojo/public/cpp/bindings/tests/bindings_perftest.cc
index 4225815e1a3bc736d75c6c52f2b66dea32f8f25a..6a50de46f93bad397468017dbebec3627fed9dda 100644
--- a/mojo/public/cpp/bindings/tests/bindings_perftest.cc
+++ b/mojo/public/cpp/bindings/tests/bindings_perftest.cc
@@ -154,7 +154,7 @@ class PingPongPaddle : public MessageReceiverWithResponderStatus {
       }
     }
 
-    internal::MessageBuilder builder(count, 8);
+    internal::MessageBuilder builder(count, 0, 8, 0);
     bool result = sender_->Accept(builder.message());
     DCHECK(result);
     return true;
@@ -173,7 +173,7 @@ class PingPongPaddle : public MessageReceiverWithResponderStatus {
     quit_closure_ = run_loop.QuitClosure();
 
     start_time_ = base::TimeTicks::Now();
-    internal::MessageBuilder builder(0, 8);
+    internal::MessageBuilder builder(0, 0, 8, 0);
     bool result = sender_->Accept(builder.message());
     DCHECK(result);
 
@@ -262,7 +262,7 @@ TEST_F(MojoBindingsPerftest, MultiplexRouterDispatchCost) {
     receiver.Reset();
     base::TimeTicks start_time = base::TimeTicks::Now();
     for (size_t j = 0; j < kIterations[i]; ++j) {
-      internal::MessageBuilder builder(0, 8);
+      internal::MessageBuilder builder(0, 0, 8, 0);
       bool result =
           router->SimulateReceivingMessageForTesting(builder.message());
       DCHECK(result);