--- a/toolkit/components/statusfilter/nsBrowserStatusFilter.cpp
+++ b/toolkit/components/statusfilter/nsBrowserStatusFilter.cpp
@@ -70,16 +70,32 @@ nsBrowserStatusFilter::RemoveProgressLis
 NS_IMETHODIMP
 nsBrowserStatusFilter::GetDOMWindow(nsIDOMWindow **aResult)
 {
     NS_NOTREACHED("nsBrowserStatusFilter::GetDOMWindow");
     return NS_ERROR_NOT_IMPLEMENTED;
 }
 
 NS_IMETHODIMP
+nsBrowserStatusFilter::GetDOMWindowID(uint64_t *aResult)
+{
+    *aResult = 0;
+    NS_NOTREACHED("nsBrowserStatusFilter::GetDOMWindowID");
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsBrowserStatusFilter::GetIsTopLevel(bool *aIsTopLevel)
+{
+    *aIsTopLevel = false;
+    NS_NOTREACHED("nsBrowserStatusFilter::GetIsTopLevel");
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
 nsBrowserStatusFilter::GetIsLoadingDocument(bool *aIsLoadingDocument)
 {
     NS_NOTREACHED("nsBrowserStatusFilter::GetIsLoadingDocument");
     return NS_ERROR_NOT_IMPLEMENTED;
 }
 
 
 //-----------------------------------------------------------------------------

--- a/uriloader/base/nsDocLoader.cpp
+++ b/uriloader/base/nsDocLoader.cpp
@@ -930,16 +930,53 @@ nsDocLoader::RemoveProgressListener(nsIW
 
 NS_IMETHODIMP
 nsDocLoader::GetDOMWindow(nsIDOMWindow **aResult)
 {
   return CallGetInterface(this, aResult);
 }
 
 NS_IMETHODIMP
+nsDocLoader::GetDOMWindowID(uint64_t *aResult)
+{
+  *aResult = 0;
+
+  nsCOMPtr<nsIDOMWindow> window;
+  nsresult rv = GetDOMWindow(getter_AddRefs(window));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsPIDOMWindow> piwindow = do_QueryInterface(window);
+  NS_ENSURE_STATE(piwindow);
+
+  MOZ_ASSERT(piwindow->IsOuterWindow());
+  *aResult = piwindow->WindowID();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocLoader::GetIsTopLevel(bool *aResult)
+{
+  *aResult = false;
+
+  nsCOMPtr<nsIDOMWindow> window;
+  nsresult rv = GetDOMWindow(getter_AddRefs(window));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsPIDOMWindow> piwindow = do_QueryInterface(window);
+  NS_ENSURE_STATE(piwindow);
+
+  nsCOMPtr<nsIDOMWindow> topWindow;
+  rv = piwindow->GetTop(getter_AddRefs(topWindow));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  *aResult = piwindow == topWindow;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
 nsDocLoader::GetIsLoadingDocument(bool *aIsLoadingDocument)
 {
   *aIsLoadingDocument = mIsLoadingDocument;
 
   return NS_OK;
 }
 
 int64_t nsDocLoader::GetMaxTotalProgress()

--- a/uriloader/base/nsIWebProgress.idl
+++ b/uriloader/base/nsIWebProgress.idl
@@ -21,17 +21,17 @@ interface nsIWebProgressListener;
  * instances is not made explicit by this interface, but the relationship may
  * exist in some implementations.
  *
  * A nsIWebProgressListener instance receives notifications for the
  * nsIWebProgress instance to which it added itself, and it may also receive
  * notifications from any nsIWebProgress instances that are children of that
  * nsIWebProgress instance.
  */
-[scriptable, uuid(570F39D0-EFD0-11d3-B093-00A024FFC08C)]
+[scriptable, uuid(1c3437b0-9e2c-11e2-9e96-0800200c9a66)]
 interface nsIWebProgress : nsISupports
 {
   /**
    * The following flags may be combined to form the aNotifyMask parameter for
    * the addProgressListener method.  They limit the set of events that are
    * delivered to an nsIWebProgressListener instance.
    */ 
 
@@ -127,15 +127,21 @@ interface nsIWebProgress : nsISupports
 
   /**
    * The DOM window associated with this nsIWebProgress instance.
    *
    * @throw NS_ERROR_FAILURE
    *        Indicates that there is no associated DOM window.
    */
   readonly attribute nsIDOMWindow DOMWindow;
+  readonly attribute uint64_t DOMWindowID;
+
+  /**
+   * Indicates whether DOMWindow.top == DOMWindow.
+   */
+  readonly attribute boolean isTopLevel;
   
   /**
    * Indicates whether or not a document is currently being loaded
    * in the context of this nsIWebProgress instance.
    */
   readonly attribute boolean isLoadingDocument;
 };