Format all tests.

tests/standalone/io/file_write_only_test.dart

Index: tests/standalone/io/file_write_only_test.dart
diff --git a/tests/standalone/io/file_write_only_test.dart b/tests/standalone/io/file_write_only_test.dart
index f5419103edb4ea5ca105aa1d7121c0772f631fa5..6cb5842fd2411bb495caf0b97542b4f6dd6f3fc2 100644
--- a/tests/standalone/io/file_write_only_test.dart
+++ b/tests/standalone/io/file_write_only_test.dart
@@ -29,11 +29,9 @@ void withTempDirSync(String prefix, void test(Directory dir)) {
 }
 
 Future expectThrowsAsync(Future future, String message) {
-  return future.then((r) => Expect.fail(message))
-               .catchError((e) {});
+  return future.then((r) => Expect.fail(message)).catchError((e) {});
 }
 
-
 Future write(Directory dir) async {
   var f = new File("${dir.path}${Platform.pathSeparator}write");
   var raf = await f.open(mode: WRITE_ONLY);