dart2js: run dartfmt on tests

tests/compiler/dart2js_extra/async_stacktrace_test.dart

Index: tests/compiler/dart2js_extra/async_stacktrace_test.dart
diff --git a/tests/compiler/dart2js_extra/async_stacktrace_test.dart b/tests/compiler/dart2js_extra/async_stacktrace_test.dart
index 4c8aa7f861bce01e88a74dd68e9655a40e29587d..d4f4cfec0279811a7bc80db9fcae3b2a24f450f3 100644
--- a/tests/compiler/dart2js_extra/async_stacktrace_test.dart
+++ b/tests/compiler/dart2js_extra/async_stacktrace_test.dart
@@ -27,9 +27,10 @@ class Tracer {
 }
 
 test1(Tracer tracer) {
-  foo() async
-              * /// asyncStar: ok
-               {
+  foo() async*
+
+  /// asyncStar: ok
+  {
     var savedStackTrace;
     try {
       try {
@@ -48,16 +49,18 @@ test1(Tracer tracer) {
     }
     tracer.trace("f");
   }
-  return foo()
-      .toList() /// asyncStar: continued
-               ;
+  return foo().toList()
+
+      /// asyncStar: continued
+      ;
 }
 
 test2(Tracer tracer) {
   var savedStackTrace;
-  foo() async
-              * /// asyncStar: continued
-               {
+  foo() async*
+
+  /// asyncStar: continued
+  {
     try {
       tracer.trace("a");
       throw "Error";
@@ -69,8 +72,9 @@ test2(Tracer tracer) {
     await new Future.error("Error 2", savedStackTrace);
     tracer.trace("d");
   }
-  return foo()
-      .toList() /// asyncStar: continued
+  return foo().toList()
+
+      /// asyncStar: continued
       .catchError((e, st) {
     tracer.trace("e");
     Expect.equals(savedStackTrace.toString(), st.toString());
@@ -79,9 +83,10 @@ test2(Tracer tracer) {
 
 test3(Tracer tracer) {
   var savedStackTrace;
-  foo() async
-              * /// asyncStar: continued
-                {
+  foo() async*
+
+  /// asyncStar: continued
+  {
     try {
       tracer.trace("a");
       throw "Error";
@@ -91,8 +96,9 @@ test3(Tracer tracer) {
       rethrow;
     }
   }
-  return foo()
-      .toList() /// asyncStar: continued
+  return foo().toList()
+
+      /// asyncStar: continued
       .catchError((e, st) {
     tracer.trace("c");
     Expect.equals(savedStackTrace.toString(), st.toString());
@@ -113,4 +119,4 @@ runTests() async {
 
 main() {
   asyncTest(runTests);
-}
+}