diff --git a/mozilla/docshell/base/nsDocShell.cpp b/mozilla/docshell/base/nsDocShell.cpp
index 87791bfe7b6..d8243cc8699 100644
--- a/mozilla/docshell/base/nsDocShell.cpp
+++ b/mozilla/docshell/base/nsDocShell.cpp
@@ -8200,15 +8200,6 @@ nsDocShell::EnsureScriptEnvironment()
     // Note that mScriptGlobal has taken a reference to the script
     // context, so we don't have to.
 
-    // Notify observers that we've created a new outer window.
-    // The matching notification for domwindowdestroyed is in
-    // nsGlobalWindow::~nsGlobalWindow().
-    nsCOMPtr<nsIObserverService> obsSvc =
-        do_GetService("@mozilla.org/observer-service;1");
-    if (obsSvc) {
-        obsSvc->NotifyObservers(win, "domwindowcreated", nsnull);
-    }
-
     return NS_OK;
 }
 
diff --git a/mozilla/dom/src/base/nsGlobalWindow.cpp b/mozilla/dom/src/base/nsGlobalWindow.cpp
index 1ff1e1a2bc1..5aade61e452 100644
--- a/mozilla/dom/src/base/nsGlobalWindow.cpp
+++ b/mozilla/dom/src/base/nsGlobalWindow.cpp
@@ -140,7 +140,6 @@
 #include "nsCSSProps.h"
 #include "nsIURIFixup.h"
 #include "nsCDefaultURIFixup.h"
-#include "nsIObserverService.h"
 
 #include "plbase64.h"
 
@@ -355,16 +354,6 @@ nsGlobalWindow::nsGlobalWindow(nsGlobalWindow *aOuterWindow)
 
 nsGlobalWindow::~nsGlobalWindow()
 {
-  if (IsOuterWindow()) {
-    // Only notify about outer window destruction
-    nsCOMPtr<nsIObserverService> obsSvc =
-      do_GetService("@mozilla.org/observer-service;1");
-    if (obsSvc) {
-      obsSvc->NotifyObservers(NS_STATIC_CAST(nsPIDOMWindow*, this),
-                              "domwindowdestroyed", nsnull);
-    }
-  }
-
   if (!--gRefCnt) {
     NS_IF_RELEASE(gEntropyCollector);
   }