Remove ConstantExpression.value

pkg/compiler/lib/src/mirrors/dart2js_member_mirrors.dart

 // Copyright (c) 2013, 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.
 
 part of dart2js.mirrors;
 
 //------------------------------------------------------------------------------
 // Member mirrors implementation.
 //------------------------------------------------------------------------------
 
@@ skipping 186 matching lines @@
     if (hasDefaultValue) {
       // TODO(johnniwinther): Get the constant from the [TreeElements]
       // associated with the enclosing method.
       ParameterElement parameter = _element;
       ConstantExpression constant = mirrorSystem.compiler.constants
           .getConstantForVariable(parameter);
       assert(invariant(parameter, constant != null,
           message: "Missing constant for parameter "
                    "$parameter with default value."));
       return _convertConstantToInstanceMirror(mirrorSystem,
-          constant, constant.value);
+          constant, mirrorSystem.compiler.constants.getConstantValue(constant));
     }
     return null;
   }
 
   bool get hasDefaultValue {
     if (_element is ParameterElement) {
       ParameterElement parameter = _element;
       return parameter.initializer != null;
     }
     return false;
@@ skipping 12 matching lines @@
                               bool isNamed)
       : super._normal(method, element, isOptional, isNamed);
 
   InitializingFormalElement get _fieldParameterElement => _element;
 
   bool get isInitializingFormal => true;
 
   VariableMirror get initializedField => new Dart2JsFieldMirror(
       owner.owner, _fieldParameterElement.fieldElement);
 }