Too many regressions in Mail caused by inserting an extra view into the
        hierarchy.  Can revisit later.

        Reviewed by olliej

        * Plugins/WebPluginController.mm:
        (-[WebPluginController destroyPlugin:]):
        (-[WebPluginController destroyAllPlugins]):
        * WebCoreSupport/WebFrameBridge.mm:
        (-[WebFrameBridge pluginViewWithPackage:attributeNames:attributeValues:baseURL:DOMElement:loadManually:]):
        * WebView/WebHTMLView.mm:
        (-[WebHTMLView addSubview:]):
        (-[WebHTMLView willRemoveSubview:]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@23559 268f45cc-cd09-0410-ab3c-d52691b4dbfc