Merge from vscode ada4bddb8edc69eea6ebaaa0e88c5f903cbd43d8 (#5529)

src/vs/workbench/contrib/performance/electron-browser/perfviewEditor.ts

@@ -52,6 +52,7 @@ export class PerfviewInput extends ResourceEditorInput {
 			localize('name', "Startup Performance"),
 			null,
 			PerfviewInput.Uri,
+			undefined,
 			textModelResolverService
 		);
 	}