Revert "Fix casts and type assertions on mixins used in native classes."

tests/compiler/dart2js_native/subclassing_type_test.dart

Index: tests/compiler/dart2js_native/subclassing_type_test.dart
diff --git a/tests/compiler/dart2js_native/subclassing_type_test.dart b/tests/compiler/dart2js_native/subclassing_type_test.dart
deleted file mode 100644
index 34748bf977f59741216a6de94c6a1a46e88a34f4..0000000000000000000000000000000000000000
--- a/tests/compiler/dart2js_native/subclassing_type_test.dart
+++ /dev/null
@@ -1,145 +0,0 @@
-// 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 "package:expect/expect.dart";
-import 'dart:_js_helper' show Creates, setNativeSubclassDispatchRecord;
-import 'dart:_interceptors' show Interceptor, findInterceptorForType;
-
-// Test that type checks and casts work for subclasses of native classes and
-// mixins on native classes.
-
-class M {}
-
-class N native "N" {}
-
-class A extends N {}
-
-class B extends A with M {       // native mixin application.
-}
-
-class C extends Object with M {  // non-native mixin application.
-}
-
-B makeB() native;
-
-@Creates('=Object')
-getBPrototype() native;
-
-void setup() native r"""
-function B() {}
-makeB = function(){return new B;};
-
-getBPrototype = function(){return B.prototype;};
-""";
-
-A gA;
-B gB;
-C gC;
-M gM;
-
-isA(x) => x is A;
-asA(x) => x as A;
-setA(x) => gA = x;
-
-isB(x) => x is B;
-asB(x) => x as B;
-setB(x) => gB = x;
-
-isC(x) => x is C;
-asC(x) => x as C;
-setC(x) => gC = x;
-
-isM(x) => x is M;
-asM(x) => x as M;
-setM(x) => gM = x;
-
-checkTrue(f) => (x) { Expect.isTrue(f(x)); };
-checkFalse(f) => (x) { Expect.isFalse(f(x)); };
-checkId(f) => (x) { Expect.identical(x, f(x)); };
-checkThrows(f) => (x) { Expect.throws(() => f(x)); };
-
-bool get checkedMode {
-  try {
-    setA(1);
-    gA = null;
-    return false;
-  } catch (e) {
-    return true;
-  }
-}
-
-main() {
-  setup();
-
-  setNativeSubclassDispatchRecord(getBPrototype(), findInterceptorForType(B));
-
-  B b = makeB();
-  C c = new C();
-
-
-  checkFalse(isA)(1);
-  checkFalse(isB)(1);
-  checkFalse(isC)(1);
-  checkFalse(isM)(1);
-
-  checkTrue(isA)(b);
-  checkTrue(isB)(b);
-  checkTrue(isM)(b);
-  checkFalse(isC)(b);
-
-  checkTrue(isC)(c);
-  checkTrue(isM)(c);
-  checkFalse(isA)(c);
-  checkFalse(isB)(c);
-
-
-  checkThrows(asA)(1);
-  checkThrows(asB)(1);
-  checkThrows(asC)(1);
-  checkThrows(asM)(1);
-
-  checkId(asA)(b);
-  checkId(asB)(b);
-  checkId(asM)(b);
-  checkThrows(asC)(b);
-
-  checkId(asC)(c);
-  checkId(asM)(c);
-  checkThrows(asA)(c);
-  checkThrows(asB)(c);
-
-
-  if (checkedMode) {
-    checkThrows(setA)(1);
-    checkThrows(setB)(1);
-    checkThrows(setC)(1);
-    checkThrows(setM)(1);
-
-    checkId(setA)(b);
-    checkId(setB)(b);
-    checkId(setM)(b);
-    checkThrows(setC)(b);
-
-    checkId(setC)(c);
-    checkId(setM)(c);
-    checkThrows(setA)(c);
-    checkThrows(setB)(c);
-
-    // One of the above assignments had a value of the correct type.
-    Expect.isNotNull(gA);
-    Expect.isNotNull(gB);
-    Expect.isNotNull(gC);
-    Expect.isNotNull(gM);
-
-    checkId(setA)(null);
-    checkId(setB)(null);
-    checkId(setC)(null);
-    checkId(setM)(null);
-
-    Expect.isNull(gA);
-    Expect.isNull(gB);
-    Expect.isNull(gC);
-    Expect.isNull(gM);
-  }
-}