(TBR) "fix" test_no_duplicate_notifications

pkg/analysis_server/test/analysis_server_test.dart

Index: pkg/analysis_server/test/analysis_server_test.dart
diff --git a/pkg/analysis_server/test/analysis_server_test.dart b/pkg/analysis_server/test/analysis_server_test.dart
index e9a1663c536f20d5a79bced0e06f71a6628d0e89..14d9fd68c6c6e72e10ebb89499d3bfb10761df76 100644
--- a/pkg/analysis_server/test/analysis_server_test.dart
+++ b/pkg/analysis_server/test/analysis_server_test.dart
@@ -337,7 +337,7 @@ import "../foo/foo.dart";
     channel.notificationsReceived.clear();
     server.updateContent(
         '0', {bar.path: new AddContentOverlay('library bar; void f() {}')});
-    await pumpEventQueue(500);
+    await pumpEventQueue(1000);
     expect(server.statusAnalyzing, isFalse);
     expect(channel.notificationsReceived, isNotEmpty);
     Set<String> notificationTypesReceived = new Set<String>();