diff --git a/mozilla/toolkit/components/passwordmgr/base/nsPasswordManager.cpp b/mozilla/toolkit/components/passwordmgr/base/nsPasswordManager.cpp
index b0d91f9cc62..0fe20738588 100644
--- a/mozilla/toolkit/components/passwordmgr/base/nsPasswordManager.cpp
+++ b/mozilla/toolkit/components/passwordmgr/base/nsPasswordManager.cpp
@@ -1253,6 +1253,12 @@ nsPasswordManager::Load(nsIDOMEvent* aEvent)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsPasswordManager::BeforeUnload(nsIDOMEvent* aEvent)
+{
+  return NS_OK;
+}
+
 /* static */ PLDHashOperator PR_CALLBACK
 nsPasswordManager::RemoveForDOMDocumentEnumerator(nsISupports* aKey,
                                                   PRInt32& aEntry,
diff --git a/mozilla/toolkit/components/passwordmgr/base/nsPasswordManager.h b/mozilla/toolkit/components/passwordmgr/base/nsPasswordManager.h
index a23314b2de6..8dcbf2fb155 100644
--- a/mozilla/toolkit/components/passwordmgr/base/nsPasswordManager.h
+++ b/mozilla/toolkit/components/passwordmgr/base/nsPasswordManager.h
@@ -132,6 +132,7 @@ public:
 
   // nsIDOMLoadListener
   NS_IMETHOD Load(nsIDOMEvent* aEvent);
+  NS_IMETHOD BeforeUnload(nsIDOMEvent* aEvent);
   NS_IMETHOD Unload(nsIDOMEvent* aEvent);
   NS_IMETHOD Abort(nsIDOMEvent* aEvent);
   NS_IMETHOD Error(nsIDOMEvent* aEvent);