Support metadata on patches.

pkg/compiler/lib/src/resolution/members.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.members;
 
 import '../common/names.dart' show
     Selectors;
 import '../compiler.dart' show
     Compiler;
@@ skipping 3765 matching lines @@
     }
     if (enclosingElement.isFunction) {
       if (modifiers.isAbstract) {
         reportExtraModifier('abstract');
       }
       if (modifiers.isStatic) {
         reportExtraModifier('static');
       }
     }
     if (node.metadata != null) {
-      variables.metadata =
+      variables.metadataInternal =
           compiler.resolver.resolveMetadata(enclosingElement, node);
     }
     visitor.visit(node.definitions);
     return const NoneResult();
   }
 
   ResolutionResult visitWhile(While node) {
     visit(node.condition);
     visitLoopBodyIn(node, node.body, new BlockScope(scope));
     return const NoneResult();
@@ skipping 847 matching lines @@
     }
     return const NoneResult();
   }
 }
 
 /// Looks up [name] in [scope] and unwraps the result.
 Element lookupInScope(Compiler compiler, Node node,
                       Scope scope, String name) {
   return Elements.unwrap(scope.lookup(name), compiler, node);
 }