Updated parser to produce error when trying to reinitialize final variables in class constructors. …

tests/language/final_attempt_reinitialization_test.dart

Index: tests/language/final_attempt_reinitialization_test.dart
diff --git a/tests/language/final_attempt_reinitialization_test.dart b/tests/language/final_attempt_reinitialization_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..428621e03ec3aed9611c366c040007b2cc8eff2d
--- /dev/null
+++ b/tests/language/final_attempt_reinitialization_test.dart
@@ -0,0 +1,19 @@
+// Copyright (c) 2017, 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.
+
+class Foo {
+  Foo(this.x);
+  final int x = 42;
+}
+
+class CoffeeShop {
+  final String name = "Coffee Lab";
+  CoffeeShop.name(String name) : this.name = name;
+}
+
+void main() {
+  Foo f = new Foo(10); //# 01: compile-time error
+  CoffeeShop presidentialCoffee = //# 02: compile-time error
+      new CoffeeShop.name("Covfefe Lab"); //# 02: compile-time error
+}