Attempt to load sdk.ds from the only embedder.

pkg/analyzer/test/resource_utils.dart

Index: pkg/analyzer/test/resource_utils.dart
diff --git a/pkg/analyzer/test/resource_utils.dart b/pkg/analyzer/test/resource_utils.dart
index 65f7069d4914ae37207645620429255872daba08..688eae0c7f8348cc8ee18752fde0d6a5f3b9aaa4 100644
--- a/pkg/analyzer/test/resource_utils.dart
+++ b/pkg/analyzer/test/resource_utils.dart
@@ -78,6 +78,9 @@ class TestPathTranslator {
   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));
 }