Register closures using StaticUse.

pkg/compiler/lib/src/universe/universe.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 universe;
 
 import 'dart:collection';
 
 import '../common.dart';
 import '../compiler.dart' show
@@ skipping 350 matching lines @@
         fieldGetters.add(element);
         break;
       case StaticUseKind.FIELD_SET:
         fieldSetters.add(element);
         break;
       case StaticUseKind.SUPER_TEAR_OFF:
         methodsNeedingSuperGetter.add(element);
         break;
       case StaticUseKind.GENERAL:
         break;
+      case StaticUseKind.CLOSURE:
+        allClosures.add(element);
+        break;
     }
   }
 
   void forgetElement(Element element, Compiler compiler) {
     allClosures.remove(element);
     slowDirectlyNestedClosures(element).forEach(compiler.forgetElement);
     closurizedMembers.remove(element);
     fieldSetters.remove(element);
     fieldGetters.remove(element);
     _directlyInstantiatedClasses.remove(element);
@@ skipping 10 matching lines @@
   // TODO(ahe): Replace this method with something that is O(1), for example,
   // by using a map.
   List<LocalFunctionElement> slowDirectlyNestedClosures(Element element) {
     // Return new list to guard against concurrent modifications.
     return new List<LocalFunctionElement>.from(
         allClosures.where((LocalFunctionElement closure) {
           return closure.executableContext == element;
         }));
   }
 }