rem: if (!this._findProxyForURL) 
add: if (!("FindProxyForURL" in this._sandBox)) 
context:     getProxyForURI: function(testURI, testHost) {        if (!this._findProxyForURL)            return null;        // Call the original function        return callFunction.call(this._sandBox, this._findProxyForURL,                                 testURI, testHost);    }
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8395/f9741f2e196aeba1326aa97413e72a9def580a01/nsProxyAutoConfig.js/clean/netwerk/base/src/nsProxyAutoConfig.js