Migrate dart2js stubs for dart:io

test/codegen_test.dart

 // Copyright (c) 2016, 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.
 
 /// Tests code generation.
 /// Runs Dart Dev Compiler on all input in the `codegen` directory and checks
 /// that the output is what we expected.
 library dev_compiler.test.codegen_test;
 
 import 'dart:convert' show JSON;
@@ skipping 32 matching lines @@
     'corelib',
     path.join('lib', 'convert'),
     path.join('lib', 'html'),
     path.join('lib', 'math'),
     path.join('lib', 'typed_data')
   ];
 
   var multitests = expandMultiTests(testDirs, filePattern);
 
   // Build packages tests depend on
-  var compiler = new ModuleCompiler(
-      new AnalyzerOptions(customUrlMappings: packageUrlMappings));
+  var generatedSdkDir = path.join(testDirectory, '..', 'tool', 'generated_sdk');
+  var analyzerOptions = new AnalyzerOptions(
+      customUrlMappings: packageUrlMappings, dartSdkPath: generatedSdkDir);
+  var compiler = new ModuleCompiler(analyzerOptions);
 
   group('dartdevc package', () {
     _buildPackages(compiler, expectDir);
 
     test('matcher', () {
       _buildPackage(compiler, expectDir, "matcher");
     });
 
     test('unittest', () {
       _buildPackage(compiler, expectDir, "unittest");
@@ skipping 54 matching lines @@
               moduleName, baseDir, files.toList(), _moduleForLibrary);
           var module = compiler.compile(unit, options);
           _writeModule(path.join(outDir.path, filename), module);
         });
       }
     });
   }
 
   if (codeCoverage) {
     test('build_sdk code coverage', () {
-      var generatedSdkDir =
-          path.join(testDirectory, '..', 'tool', 'generated_sdk');
       return build_sdk.main(['--dart-sdk', generatedSdkDir, '-o', expectDir]);
     });
   }
 }
 
 void _writeModule(String outPath, JSModuleFile result) {
   new Directory(path.dirname(outPath)).createSync(recursive: true);
 
   String errors = result.errors.join('\n');
   if (errors.isNotEmpty && !errors.endsWith('\n')) errors += '\n';
@@ skipping 165 matching lines @@
 /// Simplified from ParseDartTask.resolveDirective.
 String _resolveDirective(UriBasedDirective directive) {
   StringLiteral uriLiteral = directive.uri;
   String uriContent = uriLiteral.stringValue;
   if (uriContent != null) {
     uriContent = uriContent.trim();
     directive.uriContent = uriContent;
   }
   return directive.validate() == null ? uriContent : null;
 }