Change dart2js_foreign suite to use metadata.

dart/tests/compiler/dart2js_foreign/native_class_inheritance1_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 to see if resolving a hidden native class's method interferes with
 // subsequent resolving the subclass's method.  This might happen if the
 // superclass caches the method in the prototype, so shadowing the dispatcher
 // stored on Object.prototype.
 
 // Version 1: It might be possible to call foo directly.
-class A1 native "*A1" {
-  foo() native;
+@native("*A1")
+class A1  {
+  @native foo();
 }
 
-class B1 extends A1 native "*B1" {
-  foo() native;
+@native("*B1")
+class B1 extends A1  {
+  @native foo();
 }
 
-makeA1() native;
-makeB1() native;
+@native makeA1();
+@native makeB1();
 
 
 // Version 2: foo needs some kind of trampoline.
-class A2 native "*A2" {
-  foo([a=99]) native;
+@native("*A2")
+class A2  {
+  @native foo([a=99]);
 }
 
-class B2 extends A2 native "*B2" {
-  foo([z=1000]) native;
+@native("*B2")
+class B2 extends A2  {
+  @native foo([z=1000]);
 }
 
-makeA2() native;
-makeB2() native;
+@native makeA2();
+@native makeB2();
 
-void setup() native """
+@native("""
 // This code is all inside 'setup' and so not accesible from the global scope.
 function inherits(child, parent) {
   if (child.prototype.__proto__) {
     child.prototype.__proto__ = parent.prototype;
   } else {
     function tmp() {};
     tmp.prototype = parent.prototype;
     child.prototype = new tmp();
     child.prototype.constructor = child;
   }
 }
 function A1(){}
 function B1(){}
 inherits(B1, A1);
 A1.prototype.foo = function(){return 100;}
 B1.prototype.foo = function(){return 200;}
 
 makeA1 = function(){return new A1};
 makeB1 = function(){return new B1};
 
 function A2(){}
 function B2(){}
 inherits(B2, A2);
 A2.prototype.foo = function(a){return a + 10000;}
 B2.prototype.foo = function(z){return z + 20000;}
 
 makeA2 = function(){return new A2};
 makeB2 = function(){return new B2};
-""";
+""")
+void setup();
 
 
 main() {
   setup();
 
   var a1 = makeA1();
   var b1 = makeB1();
   Expect.equals(100, a1.foo());
   Expect.equals(200, b1.foo());
 
@@ skipping 17 matching lines @@
   caught = false;
   try {
     var x = 123;
     x.foo(20);
   } catch (var ex) {
     caught = true;
     Expect.isTrue(ex is NoSuchMethodException);
   }
   Expect.isTrue(caught, "x.foo(20) should throw");
 }