1 files changed, 5 insertions, 1 deletions
diff --git a/dom/messagechannel/MessagePortParent.h b/dom/messagechannel/MessagePortParent.h
index 4cbebe29b..23195c3a7 100644
--- a/dom/messagechannel/MessagePortParent.h
+++ b/dom/messagechannel/MessagePortParent.h
@@ -5,6 +5,7 @@
 #ifndef mozilla_dom_MessagePortParent_h
 #define mozilla_dom_MessagePortParent_h
 
+#include "mozilla/WeakPtr.h"
 #include "mozilla/dom/PMessagePortParent.h"
 
 namespace mozilla {
@@ -12,7 +13,8 @@ namespace dom {
 
 class MessagePortService;
 
-class MessagePortParent final : public PMessagePortParent
+class MessagePortParent final : public PMessagePortParent,
+                                public SupportsWeakPtr<MessagePortParent>
 {
 public:
   explicit MessagePortParent(const nsID& aUUID);
@@ -40,6 +42,8 @@ public:
                          const nsID& aDestinationUUID,
                          const uint32_t& aSequenceID);
 
+  MOZ_DECLARE_WEAKREFERENCE_TYPENAME(MessagePortParent)
+  
 private:
   virtual bool RecvPostMessages(nsTArray<MessagePortMessage>&& aMessages)
                                                                        override;