Format all tests.

tests/lib/async/stack_trace07_test.dart

Index: tests/lib/async/stack_trace07_test.dart
diff --git a/tests/lib/async/stack_trace07_test.dart b/tests/lib/async/stack_trace07_test.dart
index 1fd31fba2c851ec5a3648ac9098ab6486e8807fc..dd989e8fd05d1496f7b057c3e29757c9f5c218d7 100644
--- a/tests/lib/async/stack_trace07_test.dart
+++ b/tests/lib/async/stack_trace07_test.dart
@@ -18,13 +18,12 @@ main() {
   Completer completer = new Completer();
   StackTrace trace = captureStackTrace();
   asyncStart();
-  completer.future
-    .whenComplete(() => 499)
-    .then((_) { throw "bad things happen"; })
-    .catchError((e, st) {
-      Expect.equals("bad things happen", e);
-      Expect.isNotNull(st);
-      asyncEnd();
-    });
+  completer.future.whenComplete(() => 499).then((_) {
+    throw "bad things happen";
+  }).catchError((e, st) {
+    Expect.equals("bad things happen", e);
+    Expect.isNotNull(st);
+    asyncEnd();
+  });
   completer.complete(499);
 }