Move tests using frog 'native' extension from tests/language to frog/tests

tests/language/src/NativeLibrarySameNameUsedFrogTest.dart

Index: tests/language/src/NativeLibrarySameNameUsedFrogTest.dart
diff --git a/tests/language/src/NativeLibrarySameNameUsedFrogTest.dart b/tests/language/src/NativeLibrarySameNameUsedFrogTest.dart
deleted file mode 100644
index e03bad9cc43f294a8b5fd86da882bddf9156a5da..0000000000000000000000000000000000000000
--- a/tests/language/src/NativeLibrarySameNameUsedFrogTest.dart
+++ /dev/null
@@ -1,43 +0,0 @@
-// 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 interface has same name.
-
-#library('main');
-#import('NativeLibrarySameNameUsedLib1.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; }
-}
-
-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 ProxyI, 'ob 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.isFalse(a1 is ProxyI, 'a1 is ProxyI');
-}