Const variables handled as final

lib/compiler/implementation/compile_time_constants.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.
 
 class Constant implements Hashable {
   const Constant();
 
   bool isNull() => false;
   bool isBool() => false;
   bool isTrue() => false;
@@ skipping 821 matching lines @@
       accumulator = new DartString.concat(accumulator, partString.value);
     };
     return new StringConstant(accumulator, node);
   }
 
   // TODO(floitsch): provide better error-messages.
   Constant visitSend(Send send) {
     Element element = elements[send];
     if (Elements.isStaticOrTopLevelField(element)) {
       if (element.modifiers === null ||
-          !element.modifiers.isFinal()) {
+          // TODO(johnniwinther): This should eventually be [isConst].  
+          !element.modifiers.isFinalOrConst()) {
         error(send);
       }
       return compiler.compileVariable(element);
     } else if (send.isPrefix) {
       assert(send.isOperator);
       Constant receiverConstant = evaluate(send.receiver);
       Operator op = send.selector;
       Constant folded;
       switch (op.source.stringValue) {
         case "!":
@@ skipping 316 matching lines @@
       Constant fieldValue = fieldValues[field];
       if (fieldValue === null) {
         // Use the default value.
         fieldValue = compiler.compileVariable(field);
       }
       jsNewArguments.add(fieldValue);
     });
     return jsNewArguments;
   }
 }