Oops, also missed this WindowMediator which needs to have a GetAllCmds() method as well.

xpfe/appshell/src/nsWindowMediator.cpp

@@ -280,6 +280,8 @@ public:
 
   NS_IMETHOD GetAllCommands(nsIRDFResource* source,
                             nsIEnumerator** commands);
+  NS_IMETHOD GetAllCmds(nsIRDFResource* source,
+                            nsISimpleEnumerator** commands);
 
   NS_IMETHOD IsCommandEnabled(nsISupportsArray* aSources,
                               nsIRDFResource*   aCommand,
@@ -702,6 +704,13 @@ NS_IMETHODIMP nsWindowMediator::GetAllCommands(nsIRDFResource* source,
     return NS_ERROR_NOT_IMPLEMENTED;
 }
 
+NS_IMETHODIMP nsWindowMediator::GetAllCmds(nsIRDFResource* source,
+                                       nsISimpleEnumerator/*<nsIRDFResource>*/** commands)
+{
+    NS_NOTYETIMPLEMENTED("write me!");
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
 NS_IMETHODIMP nsWindowMediator::IsCommandEnabled(nsISupportsArray/*<nsIRDFResource>*/* aSources,
                                          nsIRDFResource*   aCommand,
                                          nsISupportsArray/*<nsIRDFResource>*/* aArguments,