associate @deprecated with enum element

pkg/analyzer/lib/src/generated/resolver.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.
 
 library engine.resolver;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'package:analyzer/src/generated/utilities_collection.dart';
@@ skipping 10976 matching lines @@
     safelyVisit(_commentBeforeFunction);
     if (resolveOnlyCommentInFunctionBody) {
       return null;
     }
     return super.visitEmptyFunctionBody(node);
   }
 
   @override
   Object visitEnumDeclaration(EnumDeclaration node) {
     //
-    // Resolve the metadata in the library scope.
+    // Resolve the metadata in the library scope
+    // and associate the annotations with the element.
     //
     if (node.metadata != null) {
       node.metadata.accept(this);
+      ElementResolver.setMetadata(node.element, node);
     }
     //
     // There is nothing else to do because everything else was resolved by the
     // element builder.
     //
     return null;
   }
 
   @override
   Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
@@ skipping 4477 matching lines @@
     nonFields.add(node);
     return null;
   }
 
   @override
   Object visitNode(AstNode node) => node.accept(TypeResolverVisitor_this);
 
   @override
   Object visitWithClause(WithClause node) => null;
 }