Index: content/browser/message_port_service.cc |
diff --git a/content/browser/message_port_service.cc b/content/browser/message_port_service.cc |
index 0d9f6084e8653284943608835e0000b158a82855..b12be9584f2f33d320d230fcb45cc96434928342 100644 |
--- a/content/browser/message_port_service.cc |
+++ b/content/browser/message_port_service.cc |
@@ -71,6 +71,7 @@ void MessagePortService::OnMessagePortMessageFilterClosing( |
void MessagePortService::Create(int route_id, |
MessagePortMessageFilter* filter, |
int* message_port_id) { |
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
*message_port_id = ++next_message_port_id_; |
MessagePort port; |