anchor.diff:    var verbose = firstConf['verbose'];
     var printTiming = firstConf['time'];
     var listTests = firstConf['list'];
  -  var useContentSecurityPolicy = firstConf['csp'];
   
     if (!firstConf['append_logs'])  {
       var file = new File(TestUtils.flakyFileName());
  
positive.code:   var startTime = new DateTime.now();
    // Extract global options from first configuration.
    var firstConf = configurations[0];
    Map<String, RegExp> selectors = firstConf['selectors'];
    var maxProcesses = firstConf['tasks'];
    var progressIndicator = firstConf['progress'];
    var failureSummary = firstConf['failure-summary'];
  
negative.code:   var testSuites = new List<TestSuite>();
    var maxBrowserProcesses = maxProcesses;
    for (var conf in configurations) {
      Map<String, RegExp> selectors = conf['selectors'];
      var useContentSecurityPolicy = conf['csp'];
      if (!listTests && runningBrowserTests) {
        // Start global http servers that serve the entire dart repo.
        // The http server is available on window.location.port, and a second
  