Attempt to load sdk.ds from the only embedder.

pkg/analyzer/test/resource_utils.dart

 // Copyright (c) 2015, 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 analyzer.test.resource_utils;
 
 import 'dart:async';
 import 'dart:core' hide Resource;
 
 import 'package:analyzer/file_system/file_system.dart';
@@ skipping 60 matching lines @@
   final MemoryResourceProvider _provider;
 
   TestPathTranslator(this._provider);
 
   Resource getResource(String posixPath) =>
       _provider.getResource(posixToOSPath(posixPath));
 
   File newFile(String posixPath, String content) =>
       _provider.newFile(posixToOSPath(posixPath), content);
 
+  File newFileWithBytes(String posixPath, List<int> bytes) =>
+      _provider.newFileWithBytes(posixToOSPath(posixPath), bytes);
+
   Folder newFolder(String posixPath) =>
       _provider.newFolder(posixToOSPath(posixPath));
 }
 
 /**
  * A resource provider for testing that asserts that any supplied paths
  * are appropriate for the OS platform on which the tests are running.
  */
 class TestResourceProvider implements ResourceProvider {
   final ResourceProvider _provider;
@@ skipping 36 matching lines @@
         fail('Expected windows path, but found: $path');
       }
     } else {
       if (path.contains('\\')) {
         fail('Expected posix path, but found: $path');
       }
     }
     return path;
   }
 }