Fix BulkFixesTest on Windows.

Change-Id: I8ff97c7a7cc94f7d7bd762b113db65cbf5321625
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/240648
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
diff --git a/pkg/analysis_server/test/analysis_server_base.dart b/pkg/analysis_server/test/analysis_server_base.dart
index 804f079..bdbd4ea 100644
--- a/pkg/analysis_server/test/analysis_server_base.dart
+++ b/pkg/analysis_server/test/analysis_server_base.dart
@@ -112,6 +112,8 @@
 
   String get testPackageTestPath => '$testPackageRootPath/test';
 
+  Folder get workspaceRoot => getFolder(workspaceRootPath);
+
   String get workspaceRootPath => '/home';
 
   Future<void> addAnalysisSubscription(
diff --git a/pkg/analysis_server/test/edit/bulk_fixes_test.dart b/pkg/analysis_server/test/edit/bulk_fixes_test.dart
index 41c6916..00c07ca 100644
--- a/pkg/analysis_server/test/edit/bulk_fixes_test.dart
+++ b/pkg/analysis_server/test/edit/bulk_fixes_test.dart
@@ -267,7 +267,7 @@
   }
 
   Future<EditBulkFixesResult> _getBulkFixes() async {
-    var request = EditBulkFixesParams([workspaceRootPath]).toRequest('0');
+    var request = EditBulkFixesParams([workspaceRoot.path]).toRequest('0');
     var response = await handleSuccessfulRequest(request);
     return EditBulkFixesResult.fromResponse(response);
   }