dart2js: run dartfmt on tests

tests/compiler/dart2js_native/native_library_same_name_used_frog_test.dart

 // Copyright (c) 2011, 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.
 
 // Test for correct hidden native class when abstract class has same name.
 
 library main;
+
 import "package:expect/expect.dart";
 import 'native_library_same_name_used_lib1.dart';
 
 void setup() native """
   // This code is all inside 'setup' and so not accesible from the global scope.
   function I(){}
   I.prototype.read = function() { return this._x; };
   I.prototype.write = function(x) { this._x = x; };
   makeI = function(){return new I};
 """;
 
 // A pure Dart implementation of I.
 
 class ProxyI implements I {
   ProxyI b;
-  ProxyI read() { return b; }
-  write(ProxyI x) { b = x; }
+  ProxyI read() {
+    return b;
+  }
+
+  write(ProxyI x) {
+    b = x;
+  }
 }
 
 main() {
   setup();
 
   var a1 = makeI();
   var a2 = makeI();
   var b1 = new ProxyI();
   var b2 = new ProxyI();
   var ob = new Object();
 
-  Expect.isFalse(ob is I,      'ob is I');
+  Expect.isFalse(ob is I, 'ob is I');
   Expect.isFalse(ob is ProxyI, 'ob is ProxyI');
 
-  Expect.isTrue(b1 is I,       'b1 is I');
-  Expect.isTrue(b1 is ProxyI,  'b1 is ProxyI');
+  Expect.isTrue(b1 is I, 'b1 is I');
+  Expect.isTrue(b1 is ProxyI, 'b1 is ProxyI');
 
-  Expect.isTrue(a1 is I,       'a1 is I');
+  Expect.isTrue(a1 is I, 'a1 is I');
   Expect.isFalse(a1 is ProxyI, 'a1 is ProxyI');
 }