Clean up a few static warnings.

utils/tests/pub/test_pub.dart

Index: utils/tests/pub/test_pub.dart
diff --git a/utils/tests/pub/test_pub.dart b/utils/tests/pub/test_pub.dart
index f9bd96b8c9c0ffc7e20f100741cac7c0324807fa..1a480052bd72cafead6ba3f8e39d0efd4def144f 100644
--- a/utils/tests/pub/test_pub.dart
+++ b/utils/tests/pub/test_pub.dart
@@ -455,7 +455,7 @@ final _TIMEOUT = 30000;
 
 /// Defines an integration test. The [body] should schedule a series of
 /// operations which will be run asynchronously.
-integration(String description, body()) {
+void integration(String description, void body()) {
   test(description, () {
     body();
     _run();