Index: content/browser/message_port_service.cc |
diff --git a/content/browser/message_port_service.cc b/content/browser/message_port_service.cc |
index 382f5b69710aba88321b80f257392227f6cc02c5..3b7ef7e5eff9047c126fb259cbf406ce3a3bdfbf 100644 |
--- a/content/browser/message_port_service.cc |
+++ b/content/browser/message_port_service.cc |
@@ -63,6 +63,7 @@ MessagePortService::~MessagePortService() { |
void MessagePortService::UpdateMessagePort(int message_port_id, |
MessagePortDelegate* delegate, |
int routing_id) { |
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
if (!message_ports_.count(message_port_id)) { |
NOTREACHED(); |
return; |