More strong mode clean-up

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 9b58405c684484b221b000c64695f24a44662d34..58f4aaa28ab0fb33f23020cd4a3e56fe29cd0fdd 100644
--- a/pkg/analysis_server/test/integration/integration_tests.dart
+++ b/pkg/analysis_server/test/integration/integration_tests.dart
@@ -17,9 +17,9 @@ import 'package:unittest/unittest.dart';
 import 'integration_test_methods.dart';
 import 'protocol_matchers.dart';
 
-const Matcher isBool = const isInstanceOf<bool>('bool');
+const Matcher isBool = const isInstanceOf<bool>();
 
-const Matcher isInt = const isInstanceOf<int>('int');
+const Matcher isInt = const isInstanceOf<int>();
 
 const Matcher isNotification = const MatchesJsonObject(
     'notification', const {'event': isString},
@@ -27,7 +27,7 @@ const Matcher isNotification = const MatchesJsonObject(
 
 const Matcher isObject = isMap;
 
-const Matcher isString = const isInstanceOf<String>('String');
+const Matcher isString = const isInstanceOf<String>();
 
 final Matcher isResponse = new MatchesJsonObject('response', {'id': isString},
     optionalFields: {'result': anything, 'error': isRequestError});