Serialize initializers for final fields.

pkg/analyzer/lib/src/summary/summarize_elements.dart

 // Copyright (c) 2015, 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.
 
 library serialization.elements;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
@@ skipping 766 matching lines @@
     UnlinkedVariableBuilder b = new UnlinkedVariableBuilder();
     b.name = variable.name;
     b.nameOffset = variable.nameOffset;
     if (!variable.hasImplicitType) {
       b.type = serializeTypeRef(variable.type, variable);
     }
     b.isStatic = variable.isStatic && variable.enclosingElement is ClassElement;
     b.isFinal = variable.isFinal;
     b.isConst = variable.isConst;
     b.documentationComment = serializeDocumentation(variable);
-    if (variable.isConst && variable is ConstVariableElement) {
+    if (variable is ConstVariableElement) {
       ConstVariableElement constVariable = variable as ConstVariableElement;
       Expression initializer = constVariable.constantInitializer;
       if (initializer != null) {
         b.constExpr = serializeConstExpr(initializer);
       }
     }
     if (b.isFinal || b.isConst) {
       b.propagatedTypeSlot = storeLinkedType(variable.propagatedType, variable);
     } else {
       // Variable is not propagable.
@@ skipping 366 matching lines @@
       exportNames.add(new LinkedExportNameBuilder(
           name: name,
           dependency: serializeDependency(dependentLibrary),
           unit: unit,
           kind: kind));
     }
     pb.exportNames = exportNames;
     return pb;
   }
 }