Capture annotations on enums (issue 23071)

pkg/analyzer/lib/src/generated/element_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.element_resolver;
 
 import 'dart:collection';
 
 import 'ast.dart';
 import 'element.dart';
@@ skipping 375 matching lines @@
     return null;
   }
 
   @override
   Object visitDeclaredIdentifier(DeclaredIdentifier node) {
     _setMetadata(node.element, node);
     return null;
   }
 
   @override
+  Object visitEnumDeclaration(EnumDeclaration node) {
+    _setMetadata(node.element, node);
+    return null;
+  }
+
+  @override
   Object visitExportDirective(ExportDirective node) {
     ExportElement exportElement = node.element;
     if (exportElement != null) {
       // The element is null when the URI is invalid
       // TODO(brianwilkerson) Figure out whether the element can ever be
       // something other than an ExportElement
       _resolveCombinators(exportElement.exportedLibrary, node.combinators);
       _setMetadata(exportElement, node);
     }
     return null;
@@ skipping 2364 matching lines @@
 
   @override
   Element get staticElement => null;
 
   @override
   accept(AstVisitor visitor) => null;
 
   @override
   void visitChildren(AstVisitor visitor) {}
 }