Rename Constant to ConstantValue and ConstExp to ConstantExpression.

sdk/lib/_internal/compiler/implementation/native/behavior.dart

 // Copyright (c) 2014, 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 native;
 
 /// This class is a temporary work-around until we get a more powerful DartType.
 class SpecialType {
 final String name;
 const SpecialType._(this.name);
@@ skipping 334 matching lines @@
    * [annotationClass].
    * Returns `null` if no constraints.
    */
   static _collect(Element element, Compiler compiler, Element annotationClass,
                   lookup(str)) {
     var types = null;
     for (Link<MetadataAnnotation> link = element.metadata;
          !link.isEmpty;
          link = link.tail) {
       MetadataAnnotation annotation = link.head.ensureResolved(compiler);
-      Constant value = annotation.constant.value;
+      ConstantValue value = annotation.constant.value;
       if (!value.isConstructedObject) continue;
-      ConstructedConstant constructedObject = value;
+      ConstructedConstantValue constructedObject = value;
       if (constructedObject.type.element != annotationClass) continue;
 
-      List<Constant> fields = constructedObject.fields;
+      List<ConstantValue> fields = constructedObject.fields;
       // TODO(sra): Better validation of the constant.
       if (fields.length != 1 || !fields[0].isString) {
         PartialMetadataAnnotation partial = annotation;
         compiler.internalError(annotation,
             'Annotations needs one string: ${partial.parseNode(compiler)}');
       }
-      StringConstant specStringConstant = fields[0];
+      StringConstantValue specStringConstant = fields[0];
       String specString = specStringConstant.toDartString().slowToString();
       for (final typeString in specString.split('|')) {
         var type = _parseType(typeString, compiler, lookup, annotation);
         if (types == null) types = [];
         types.add(type);
       }
     }
     return types;
   }
 
@@ skipping 51 matching lines @@
     compiler.internalError(
         _errorNode(locationNodeOrElement, compiler),
         "Type '$typeString' not found.");
   }
 
   static _errorNode(locationNodeOrElement, compiler) {
     if (locationNodeOrElement is Node) return locationNodeOrElement;
     return locationNodeOrElement.parseNode(compiler);
   }
 }