Format all tests.

tests/standalone/io/async_catch_errors_test.dart

Index: tests/standalone/io/async_catch_errors_test.dart
diff --git a/tests/standalone/io/async_catch_errors_test.dart b/tests/standalone/io/async_catch_errors_test.dart
index 4ebccb63d70c5c29d93ade34f1036a5a798b0c39..431057b391476e83a0f87160f785417e11da422a 100644
--- a/tests/standalone/io/async_catch_errors_test.dart
+++ b/tests/standalone/io/async_catch_errors_test.dart
@@ -40,11 +40,8 @@ main() {
   // We keep a ReceivePort open until all tests are done. This way the VM will
   // hang if the callbacks are not invoked and the test will time out.
   asyncStart();
-  testSocketException()
-    .then((_) => testFileSystemException())
-    .then((_) {
-      asyncEnd();
-      Expect.listEquals(["SocketException", "FileSystemException"],
-                        events);
-    });
+  testSocketException().then((_) => testFileSystemException()).then((_) {
+    asyncEnd();
+    Expect.listEquals(["SocketException", "FileSystemException"], events);
+  });
 }