Remove Compiler.openWorld

tests/compiler/dart2js/exit_code_test.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.
 
 // Test the exit code of dart2js in case of exceptions, errors, warnings, etc.
 
 import 'dart:async';
 import 'dart:io' show Platform;
 
 import 'package:async_helper/async_helper.dart';
@@ skipping 151 matching lines @@
     compiler.test('ScannerTask.scanElements');
     super.scanElements(compilationUnit);
   }
 }
 
 class TestResolver extends ResolverTask {
   final TestCompiler compiler;
 
   TestResolver(TestCompiler compiler, ConstantCompiler constantCompiler)
       : this.compiler = compiler,
-        super(compiler.resolution, constantCompiler, compiler.openWorld,
-            compiler.measurer);
+        super(compiler.resolution, constantCompiler, compiler.measurer);
 
   void computeClassMembers(ClassElement element) {
     compiler.test('ResolverTask.computeClassMembers');
     super.computeClassMembers(element);
   }
 }
 
 class TestResolution extends CompilerResolution {
   TestCompiler compiler;
 
@@ skipping 128 matching lines @@
 
       expected =
           _expectedExitCode(beforeRun: tests[marker], fatalWarnings: true);
       totalExpectedErrors += expected.length;
       await testExitCodes(marker, expected, ['--fatal-warnings']);
     }
 
     Expect.equals(totalExpectedErrors, checkedResults);
   });
 }