<rdar://problem/7304575>
        
        * Plugins/WebBaseNetscapePluginView.h: Added new boolean ivar and -hasBeenHalted instance method.
        * Plugins/WebBaseNetscapePluginView.mm:
        (-[WebBaseNetscapePluginView halt]):Update _hasBeenHalted.
        (-[WebBaseNetscapePluginView hasBeenHalted]): Added.
        * WebView/WebView.mm:
        (+[WebView _hasPluginForNodeBeenHalted:]): Checks to see if a plug-in node's been halted.
        * WebView/WebViewPrivate.h: Added -_hasPluginForNodeBeenHalted method.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@49733 268f45cc-cd09-0410-ab3c-d52691b4dbfc