Mojo C++ bindings: fix a DCHECK in multiplex_router.h

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/public/cpp/bindings/lib/pipe_control_message_proxy.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/compiler_specific.h"
+#include "base/logging.h"
 #include "mojo/public/cpp/bindings/lib/message_builder.h"
 #include "mojo/public/cpp/bindings/lib/serialization.h"
 #include "mojo/public/cpp/bindings/message.h"
 #include "mojo/public/interfaces/bindings/pipe_control_messages.mojom.h"
 
 namespace mojo {
 namespace internal {
 namespace {
 
 void SendRunOrClosePipeMessage(MessageReceiver* receiver,
@@ skipping 18 matching lines @@
   // has encountered an error, which will be visible through other means.
   ALLOW_UNUSED_LOCAL(ok);
 }
 
 }  // namespace
 
 PipeControlMessageProxy::PipeControlMessageProxy(MessageReceiver* receiver)
     : receiver_(receiver) {}
 
 void PipeControlMessageProxy::NotifyPeerEndpointClosed(InterfaceId id) {
+  DCHECK(!IsMasterInterfaceId(id));
   pipe_control::PeerAssociatedEndpointClosedEventPtr event(
       pipe_control::PeerAssociatedEndpointClosedEvent::New());
   event->id = id;
 
   pipe_control::RunOrClosePipeInputPtr input(
       pipe_control::RunOrClosePipeInput::New());
   input->set_peer_associated_endpoint_closed_event(std::move(event));
 
   SendRunOrClosePipeMessage(receiver_, std::move(input), &context_);
 }
 
 void PipeControlMessageProxy::NotifyEndpointClosedBeforeSent(InterfaceId id) {
+  DCHECK(!IsMasterInterfaceId(id));
   pipe_control::AssociatedEndpointClosedBeforeSentEventPtr event(
       pipe_control::AssociatedEndpointClosedBeforeSentEvent::New());
   event->id = id;
 
   pipe_control::RunOrClosePipeInputPtr input(
       pipe_control::RunOrClosePipeInput::New());
   input->set_associated_endpoint_closed_before_sent_event(std::move(event));
 
   SendRunOrClosePipeMessage(receiver_, std::move(input), &context_);
 }
 
 }  // namespace internal
 }  // namespace mojo