Remove Compiler.openWorld

pkg/compiler/lib/src/js_backend/backend.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 js_backend.backend;
 
 import 'dart:async' show Future;
 
 import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames;
 
@@ skipping 2799 matching lines @@
         case TypeUseKind.CHECKED_MODE_CHECK:
           if (backend.compiler.options.enableTypeAssertions) {
             onIsCheck(type, transformed);
           }
           break;
         case TypeUseKind.CATCH_TYPE:
           onIsCheck(type, transformed);
           break;
         case TypeUseKind.TYPE_LITERAL:
           backend.customElementsAnalysis.registerTypeLiteral(type);
-          if (type.isTypedef) {
-            backend.compiler.openWorld.registerTypedef(type.element);
-          }
           if (type.isTypeVariable && type is! MethodTypeVariableType) {
             // GENERIC_METHODS: The `is!` test above filters away method type
             // variables, because they have the value `dynamic` with the
             // incomplete support for generic methods offered with
             // '--generic-method-syntax'. This must be revised in order to
             // support generic methods fully.
             ClassElement cls = type.element.enclosingClass;
             backend.rti.registerClassUsingTypeVariableExpression(cls);
             registerBackendImpact(transformed, impacts.typeVariableExpression);
           }
@@ skipping 397 matching lines @@
   ClassElement get mapImplementation => helpers.mapLiteralClass;
   ClassElement get constMapImplementation => helpers.constMapLiteralClass;
   ClassElement get typeImplementation => helpers.typeLiteralClass;
   ClassElement get boolImplementation => helpers.jsBoolClass;
   ClassElement get nullImplementation => helpers.jsNullClass;
   ClassElement get syncStarIterableImplementation => helpers.syncStarIterable;
   ClassElement get asyncFutureImplementation => helpers.futureImplementation;
   ClassElement get asyncStarStreamImplementation => helpers.controllerStream;
   ClassElement get functionImplementation => helpers.coreClasses.functionClass;
 }