Format all tests.

tests/isolate/issue_24243_child3_isolate.dart

 // Copyright (c) 2015, 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.
 
 import 'dart:collection';
 import 'dart:isolate';
 
 main(List<String> args, message) {
   var sendPort = message;
   try {
     var map0 = new LinkedHashMap<int, String>();
     map0[1] = 'one';
     map0[2] = 'two';
     map0[3] = 'three';
     var map1 = new LinkedHashMap<int, String>();
     map1[4] = 'four';
     map1[5] = 'five';
     map1[6] = 'size';
     var map2 = new LinkedHashMap<int, String>();
     map2[7] = 'seven';
     map2[8] = 'eight';
     map2[9] = 'nine';
 
     var map = new Map<int, LinkedHashMap<int, String>>.from(
-        { 0:map0, 1:map1, 2:map2 });
+        {0: map0, 1: map1, 2: map2});
     sendPort.send(map);
-  } catch(error) {
+  } catch (error) {
     sendPort.send("Invalid Argument(s).");
   }
 }