dart2js_native tests: Migrate 'native STRING' to JS-calls - part 2/2

tests/compiler/dart2js_native/bound_closure_test.dart

 // Copyright (c) 2013, 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 'native_testing.dart';
 
 // Test calling convention of property extraction closures.
 
 class AA {
   bar(a, [b = 'A']) => 'AA.bar($a, $b)'; // bar is plain dart convention.
   foo(a, [b = 'A']) => 'AA.foo($a, $b)'; // foo has interceptor convention.
 }
 
 @Native("BB")
 class BB {
   foo(a, [b = 'B']) native;
 }
 
 @Native("CC")
 class CC extends BB {
   foo(a, [b = 'C']) native;
 
   get superfoo => super.foo;
 }
 
 makeBB() native;
 makeCC() native;
 inscrutable(a) native;
 
-void setup() native r"""
-function BB() {}
-BB.prototype.foo = function(u, v) {
-  return 'BB.foo(' + u + ', ' + v + ')';
-};
+void setup() {
+  JS('', r"""
+(function(){
+  function BB() {}
+  BB.prototype.foo = function(u, v) {
+    return 'BB.foo(' + u + ', ' + v + ')';
+  };
 
-function CC() {}
-CC.prototype.foo = function(u, v) {
-  return 'CC.foo(' + u + ', ' + v + ')';
-};
+  function CC() {}
+  CC.prototype.foo = function(u, v) {
+    return 'CC.foo(' + u + ', ' + v + ')';
+  };
 
-makeBB = function(){return new BB;};
-makeCC = function(){return new CC;};
-inscrutable = function(a){return a;};
+  makeBB = function(){return new BB()};
+  makeCC = function(){return new CC()};
+  inscrutable = function(a){return a;};
 
-self.nativeConstructor(BB);
-self.nativeConstructor(CC);
-""";
+  self.nativeConstructor(BB);
+  self.nativeConstructor(CC);
+})()""");
+}
 
 main() {
   nativeTesting();
   setup();
   var a = inscrutable(new AA());
   var b = inscrutable(makeBB());
   var c = inscrutable(makeCC)();
 
   Expect.equals('AA.bar(1, A)', inscrutable(a).bar(1));
   Expect.equals('AA.bar(2, 3)', inscrutable(a).bar(2, 3));
@@ skipping 17 matching lines @@
 
   Expect.equals('AA.foo(1, A)', afoo(1));
   Expect.equals('AA.foo(2, 3)', afoo(2, 3));
 
   Expect.equals('BB.foo(1, B)', bfoo(1));
   Expect.equals('BB.foo(2, 3)', bfoo(2, 3));
 
   Expect.equals('CC.foo(1, C)', cfoo(1));
   Expect.equals('CC.foo(2, 3)', cfoo(2, 3));
 }