Call cleanupScriptObjectsForPlugin on the frame after destroying the plug-in.
        
        * Plugins/WebBaseNetscapePluginView.mm:
        (-[WebBaseNetscapePluginView _destroyPlugin]):
        * Plugins/WebPluginController.mm:
        (-[WebPluginController destroyPlugin:]):
        (-[WebPluginController destroyAllPlugins]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@23535 268f45cc-cd09-0410-ab3c-d52691b4dbfc