Format all tests.

tests/lib_strong/async/stack_trace18_test.dart

Index: tests/lib_strong/async/stack_trace18_test.dart
diff --git a/tests/lib_strong/async/stack_trace18_test.dart b/tests/lib_strong/async/stack_trace18_test.dart
index 692bf9755f29412513ffacf22bc0da9b893b5b7e..51b0c705b09b7c9160c6dd333e9494840a591e65 100644
--- a/tests/lib_strong/async/stack_trace18_test.dart
+++ b/tests/lib_strong/async/stack_trace18_test.dart
@@ -18,21 +18,21 @@ main() {
   Completer completer = new Completer();
   StackTrace trace = captureStackTrace();
   asyncStart();
-  completer.future
-    .whenComplete(() => 499)
-    .then((_) { throw "should never be reached"; })
-    .then((_) { throw "Unreachable"; },
-      onError: (e, st) {
-        Expect.equals("c-error", e);
-        Expect.identical(trace, st);
-        // Test the rethrowing the same error keeps the stack trace.
-        throw e;
-      })
-    .then((_) { throw "Unreachable"; },
-      onError: (e, st) {
-        Expect.equals("c-error", e);
-        Expect.identical(trace, st);
-        asyncEnd();
-      });
+  completer.future.whenComplete(() => 499).then((_) {
+    throw "should never be reached";
+  }).then((_) {
+    throw "Unreachable";
+  }, onError: (e, st) {
+    Expect.equals("c-error", e);
+    Expect.identical(trace, st);
+    // Test the rethrowing the same error keeps the stack trace.
+    throw e;
+  }).then((_) {
+    throw "Unreachable";
+  }, onError: (e, st) {
+    Expect.equals("c-error", e);
+    Expect.identical(trace, st);
+    asyncEnd();
+  });
   completer.completeError("c-error", trace);
 }