Fix a bug in the container tracer, where the returned value of a closurized method was not traced c…

sdk/lib/_internal/compiler/implementation/inferrer/container_tracer.dart

 // Copyright (c) 2013, 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.
 
 part of type_graph_inferrer;
 
 /**
  * A set of selector names that [List] implements, that we know do not
  * change the element type of the list, or let the list escape to code
  * that might change the element type.
@@ skipping 370 matching lines @@
     if (element.getEnclosingClass() != compiler.backend.listImplementation) {
       return false;
     }
     Element method = element.enclosingElement;
     return (method.name == '[]=')
         || (method.name == 'add')
         || (method.name == 'insert');
   }
 
   visitElementTypeInformation(ElementTypeInformation info) {
+    if (info.isClosurized()) {
+      bailout('Returned from a closurized method');
+    }
     if (isClosure(info.element)) {
       bailout('Returned from a closure');
     }
     if (compiler.backend.isNeededForReflection(info.element)) {
       bailout('Escape in reflection');
     }
     if (isParameterOfListAddingMethod(info.element)) {
       // These elements are being handled in
       // [visitDynamicCallSiteTypeInformation].
       return;
     }
     addNewEscapeInformation(info);
   }
 }