Format all tests.

tests/lib/async/stack_trace09_test.dart

Index: tests/lib/async/stack_trace09_test.dart
diff --git a/tests/lib/async/stack_trace09_test.dart b/tests/lib/async/stack_trace09_test.dart
index 4209f3ce1fb99294c8061fb712da7acc9013da35..534aeb1159178ba8fe0ea9daa4cbe17ca98e8b57 100644
--- a/tests/lib/async/stack_trace09_test.dart
+++ b/tests/lib/async/stack_trace09_test.dart
@@ -22,11 +22,10 @@ main() {
     controller.close();
   });
   asyncStart();
-  controller.stream
-    .handleError((e, st) {
-      Expect.equals("error", e);
-      Expect.identical(trace, st);
-    })
-    .listen((x) { throw "should never be reached"; },
-            onDone: asyncEnd);
+  controller.stream.handleError((e, st) {
+    Expect.equals("error", e);
+    Expect.identical(trace, st);
+  }).listen((x) {
+    throw "should never be reached";
+  }, onDone: asyncEnd);
 }