Format all tests.

tests/lib/async/stack_trace11_test.dart

Index: tests/lib/async/stack_trace11_test.dart
diff --git a/tests/lib/async/stack_trace11_test.dart b/tests/lib/async/stack_trace11_test.dart
index d72b50f36cadfac72d7fe8cee52407591208612f..d698a1871446deca908df13707f787c1e87b40dc 100644
--- a/tests/lib/async/stack_trace11_test.dart
+++ b/tests/lib/async/stack_trace11_test.dart
@@ -18,9 +18,10 @@ main() {
   StackTrace trace = captureStackTrace();
   asyncStart();
   var f = new Future.error(499, trace);
-  f.then((_) { throw "Unreachable"; },
-    onError: (e, st) {
-      Expect.identical(trace, st);
-      asyncEnd();
-    });
+  f.then((_) {
+    throw "Unreachable";
+  }, onError: (e, st) {
+    Expect.identical(trace, st);
+    asyncEnd();
+  });
 }