Even less reliance on Compiler.closedWorld

pkg/compiler/lib/src/js_backend/patch_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 dart2js.js_backend.patch_resolver;
 
 import '../common.dart';
 import '../common/resolution.dart' show Resolution;
 import '../common/tasks.dart' show CompilerTask;
 import '../compiler.dart' show Compiler;
@@ skipping 66 matching lines @@
         // elsewhere.
 
         // The node contains the type, so there is a potential overlap.
         // Therefore we only check the text if the types are identical.
         String originParameterText = originParameter.node.toString();
         String patchParameterText = patchParameter.node.toString();
         if (originParameterText != patchParameterText
             // We special case the list constructor because of the
             // optional parameter.
             &&
-            origin != compiler.unnamedListConstructor) {
+            origin != compiler.commonElements.unnamedListConstructor) {
           reporter.reportError(
               reporter.createMessage(
                   originParameter, MessageKind.PATCH_PARAMETER_MISMATCH, {
                 'methodName': origin.name,
                 'originParameter': originParameterText,
                 'patchParameter': patchParameterText
               }),
               <DiagnosticMessage>[
                 reporter.createMessage(
                     patchParameter,
@@ skipping 73 matching lines @@
           'originParameterCount': originSignature.optionalParameterCount,
           'patchParameterCount': patchSignature.optionalParameterCount
         });
       });
     } else {
       checkMatchingPatchParameters(origin, originSignature.optionalParameters,
           patchSignature.optionalParameters);
     }
   }
 }