Remove warning for using a factory constructor on an abstract class.

tests/language/src/AbstractFactoryConstructorTest.dart

Index: tests/language/src/AbstractFactoryConstructorTest.dart
diff --git a/tests/language/src/AbstractFactoryConstructorTest.dart b/tests/language/src/AbstractFactoryConstructorTest.dart
new file mode 100644
index 0000000000000000000000000000000000000000..db1854c4c82b9ba758b4b9bf3ab304d625099dff
--- /dev/null
+++ b/tests/language/src/AbstractFactoryConstructorTest.dart
@@ -0,0 +1,28 @@
+// 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.
+// Dart test program for constructors and initializers.
+
+// Exercises issue 2282, factory constructors in abstract classes should
+// not emit a static type warning
+
+class B extends A1 {
+  B() {}
+  method() {}
+}
+
+class A1 {
+  A1() {}
+  abstract method();
+  factory A1.make() { return new B(); }    
+}
+
+class A2 {                           
+  abstract method();                 
+  A2.make() {}
+}
+
+main() {
+  new A1.make();
+  new A2.make();              /// 01: static type warning
+}