Revert "Fix observatory tests broken by running dartfmt."

runtime/observatory/tests/service/gc_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // VMOptions=--error_on_bad_type --error_on_bad_override
 
 import 'package:observatory/service_io.dart';
 import 'test_helper.dart';
 
 import 'dart:async';
 
 void script() {
   var grow;
   grow = (int iterations, int size, Duration duration) {
     if (iterations <= 0) {
       return;
     }
     new List<int>(size);
     new Timer(duration, () => grow(iterations - 1, size, duration));
   };
   grow(100, 1 << 24, new Duration(seconds: 1));
 }
 
 var tests = [
-  (Isolate isolate) {
-    Completer completer = new Completer();
-    // Expect at least this many GC events.
-    int gcCountdown = 3;
-    isolate.vm.getEventStream(VM.kGCStream).then((stream) {
-      var subscription;
-      subscription = stream.listen((ServiceEvent event) {
-        assert(event.kind == ServiceEvent.kGC);
-        print('Received GC event');
-        if (--gcCountdown == 0) {
-          subscription.cancel();
-          completer.complete();
-        }
-      });
+
+(Isolate isolate) {
+  Completer completer = new Completer();
+  // Expect at least this many GC events.
+  int gcCountdown = 3;
+  isolate.vm.getEventStream(VM.kGCStream).then((stream) {
+    var subscription;
+    subscription = stream.listen((ServiceEvent event) {
+      assert(event.kind == ServiceEvent.kGC);
+      print('Received GC event');
+      if (--gcCountdown == 0) {
+        subscription.cancel();
+        completer.complete();
+      }
     });
-    return completer.future;
-  },
+  });
+  return completer.future;
+},
+
 ];
 
 main(args) => runIsolateTests(args, tests, testeeConcurrent: script);