private void AddOtherMenuItemsForDebugging(GeckoContextMenuEventArgs e)
{
e.ContextMenu.MenuItems.Add("Open about:memory window", OnOpenAboutMemory);
e.ContextMenu.MenuItems.Add("Open about:config window", OnOpenAboutConfig);
e.ContextMenu.MenuItems.Add("Open about:cache window", OnOpenAboutCache);
}