Update or delete language tests using obsolete interfaces or default factory

tests/language/factory_implementation_test.dart

Index: tests/language/factory_implementation_test.dart
===================================================================
--- tests/language/factory_implementation_test.dart	(revision 15648)
+++ tests/language/factory_implementation_test.dart	(working copy)
@@ -1,13 +1,13 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, 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.
 
-interface A default B {
-  A(int x, int y);
+abstract class A {
+  factory A(int x, int y) = B;
 }
 
-interface X default B {
-  X(int x, int y);
+abstract class X {
+  factory X(int x, int y) = B.X;
 }
 
 class XImpl implements X {
@@ -16,7 +16,6 @@
   XImpl(this.x, this.y);
 }
 
-// new A invokes B constructor because B implements A.
 class B implements A {
   final int x;
   final int y;
@@ -24,19 +23,19 @@
   B(this.x, this.y);
   // This factory will never be invoked.
   // TODO(ahe): Is this a compile time error?
-  factory A(int a, int b) {  return new B(0, 0); }
+  factory B.A(int a, int b) {  return new B(0, 0); }
 
-  factory X(int a, int b) { return new XImpl(a * 10, b * 10); }
+  factory B.X(int a, int b) { return new XImpl(a * 10, b * 10); }
 }
 
 main() {
   var a = new A(1, 2);
-  // Check that constructor B is invoked and not factory A.
+  // Check that constructor B is invoked and not factory B.A.
   Expect.equals(1, a.x);
   Expect.equals(2, a.y);
 
-  var x = new X(11, 22);
+  var x = new X(11, 22);  /// 00: dynamic type error
   // Check that factory is invoked.
-  Expect.equals(110, x.x);
-  Expect.equals(220, x.y);
+  Expect.equals(110, x.x);  /// 00: continued
+  Expect.equals(220, x.y);  /// 00: continued
 }