Share the first error messages.

pkg/compiler/lib/src/resolution/resolution.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.
 
 library dart2js.resolution;
 
 import 'dart:collection' show Queue;
 
 import '../common.dart';
 import '../common/names.dart' show
@@ skipping 221 matching lines @@
       }
       if (element.isConstructor) {
         if (tree.returnType != null) {
           reporter.reportErrorMessage(
               tree, MessageKind.CONSTRUCTOR_WITH_RETURN_TYPE);
         }
         if (element.isConst &&
             tree.hasBody() &&
             !tree.isRedirectingFactory) {
           reporter.reportErrorMessage(
-              tree, MessageKind.CONST_CONSTRUCTOR_HAS_BODY);
+              tree, MessageKind.CONST_CONSTRUCTOR_OR_FACTORY_WITH_BODY);
         }
       }
 
       ResolverVisitor visitor = visitorFor(element);
       ResolutionRegistry registry = visitor.registry;
       registry.defineFunction(tree, element);
       visitor.setupFunction(tree, element);
       processAsyncMarker(compiler, element, registry);
 
       if (element.isGenerativeConstructor) {
@@ skipping 874 matching lines @@
   TreeElements get treeElements {
     assert(invariant(this, _treeElements !=null,
         message: "TreeElements have not been computed for $this."));
     return _treeElements;
   }
 
   void reuseElement() {
     _treeElements = null;
   }
 }