Language tests updated to use const instead of final.

tests/language/call_through_getter_test.dart

 // Copyright (c) 2011, 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.
 
 // Tests that we can call functions through getters.
 
-final TOP_LEVEL_CONST = 1;
-final TOP_LEVEL_CONST_REF = TOP_LEVEL_CONST;
-final TOP_LEVEL_NULL = null;
+const TOP_LEVEL_CONST = 1;
+const TOP_LEVEL_CONST_REF = TOP_LEVEL_CONST;
+const TOP_LEVEL_NULL = null;
 
 var topLevel;
 
 class CallThroughGetterTest {
 
   static void testMain() {
     testTopLevel();
     testField();
     testGetter();
     testMethod();
     testEvaluationOrder();
   }
 
   static void testTopLevel() {
     topLevel = function() {
       return 2;
     };
     Expect.equals(1, TOP_LEVEL_CONST);
     Expect.equals(1, TOP_LEVEL_CONST_REF);
     Expect.equals(2, topLevel());
 
-    expectThrowsNotClosure(() { 
+    expectThrowsNotClosure(() {
       TOP_LEVEL_CONST(); /// static type warning
     });
-    expectThrowsNotClosure(() { 
+    expectThrowsNotClosure(() {
       (TOP_LEVEL_CONST)();  /// static type warning
     });
   }
 
   static void testField() {
     A a = new A();
     a.field = () => 42;
     Expect.equals(42, a.field());
     Expect.equals(42, (a.field)());
 
@@ skipping 111 matching lines @@
   get z { _mark('z'); return 2; }
 
   _mark(m) { _order.add(m); return _order.toString(); }
   StringBuffer _order;
 
 }
 
 main() {
   CallThroughGetterTest.testMain();
 }