performance measurement mods:

pkg/analysis_server/test/integration/integration_tests.dart

Index: pkg/analysis_server/test/integration/integration_tests.dart
diff --git a/pkg/analysis_server/test/integration/integration_tests.dart b/pkg/analysis_server/test/integration/integration_tests.dart
index f46b3387c04b20315b421bceba7b2a815f7b5f8d..3345554ed113462cf1e153178ab850077a5e0f66 100644
--- a/pkg/analysis_server/test/integration/integration_tests.dart
+++ b/pkg/analysis_server/test/integration/integration_tests.dart
@@ -16,6 +16,7 @@ import 'package:unittest/unittest.dart';
 
 import 'integration_test_methods.dart';
 import 'protocol_matchers.dart';
+import 'package:analysis_server/src/server/driver.dart' as analysisServer;
 
 const Matcher isBool = const isInstanceOf<bool>('bool');
 
@@ -590,7 +591,8 @@ class Server {
    * "--pause-isolates-on-exit", allowing the observatory to be used.
    */
   Future start({bool debugServer: false, int diagnosticPort,
-      bool profileServer: false, bool useAnalysisHighlight2: false}) {
+      bool profileServer: false, bool newTaskModel: false,
+      bool useAnalysisHighlight2: false}) {
     if (_process != null) {
       throw new Exception('Process already started');
     }
@@ -619,6 +621,9 @@ class Server {
     if (useAnalysisHighlight2) {
       arguments.add('--useAnalysisHighlight2');
     }
+    if (newTaskModel) {
+      arguments.add('--${analysisServer.Driver.ENABLE_NEW_TASK_MODEL}');
+    }
     return Process.start(dartBinary, arguments).then((Process process) {
       _process = process;
       process.exitCode.then((int code) {