Allow classes shadowed by type variables to be referenced in static context

tests/language/src/TypeVariableShadowsClass.dart

+// 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.
+
+// A reference to a class that is shadowed by a type variable should still work
+// in a static context.
+
+class T {
+  String toString() => "Class T";
+}
+
+class A<T> {
+  static method() {
+    var foo = new T();
+    Expect.equals("Class T", foo.toString());
+  }
+}
+
+main() {
+  A.method();
+}