Fixed copyright date; the code is in fact from this year.

tests/language/cascade_in_expression_function_test.dart

-// 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.
 // Dart test program for testing throw statement
 
 class MyClass {
   foo() => this..bar(3)..baz(4);
   bar(x) => x;
   baz(y) => y*2;
 }
 
 main() {
   var o = new MyClass();
   Expect.equals(o.foo(), o);
 }