assistant: deprecate assistant.mojom

Bug: b:154268518
Change-Id: I131c63ddbe59a70971a286f58243e701610945a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2257401
Commit-Queue: Xiaohui Chen <[email protected]>
Reviewed-by: David Black <[email protected]>
Reviewed-by: Avi Drissman <[email protected]>
Reviewed-by: Xiyuan Xia <[email protected]>
Reviewed-by: Ahmed Fakhry <[email protected]>
Reviewed-by: Jeroen Dhollander <[email protected]>
Reviewed-by: Sam McNally <[email protected]>
Cr-Commit-Position: refs/heads/master@{#782248}
diff --git a/ash/test/ash_test_helper.cc b/ash/test/ash_test_helper.cc
index a6aa892..415f8972 100644
--- a/ash/test/ash_test_helper.cc
+++ b/ash/test/ash_test_helper.cc
@@ -238,8 +238,7 @@
   // Cursor is visible by default in tests.
   shell->cursor_manager()->ShowCursor();
 
-  shell->assistant_controller()->SetAssistant(
-      assistant_service_->CreateRemoteAndBind());
+  shell->assistant_controller()->SetAssistant(assistant_service_.get());
 
   shell->system_tray_model()->SetClient(system_tray_client_.get());