base::ListValue::Append cleanup: pass unique_ptr instead of the released pointer.

extensions/browser/api/printer_provider/printer_provider_api.cc

Index: extensions/browser/api/printer_provider/printer_provider_api.cc
diff --git a/extensions/browser/api/printer_provider/printer_provider_api.cc b/extensions/browser/api/printer_provider/printer_provider_api.cc
index 762bd7e0c12a98d4336e48f703d076b7a60cc312..a29a8ca79e8905998d3ffa2579d747b640fa045e 100644
--- a/extensions/browser/api/printer_provider/printer_provider_api.cc
+++ b/extensions/browser/api/printer_provider/printer_provider_api.cc
@@ -614,7 +614,7 @@ void PrinterProviderAPIImpl::DispatchPrintRequested(
   // Request id is not part of the public API and it will be massaged out in
   // custom bindings.
   internal_args->AppendInteger(request_id);
-  internal_args->Append(print_job.ToValue().release());
+  internal_args->Append(print_job.ToValue());
   std::unique_ptr<Event> event(
       new Event(events::PRINTER_PROVIDER_ON_PRINT_REQUESTED,
                 api::printer_provider::OnPrintRequested::kEventName,