mash: Repost mouse pressed event when closing Ash system tray

components/mus/ws/test_utils.h

Index: components/mus/ws/test_utils.h
diff --git a/components/mus/ws/test_utils.h b/components/mus/ws/test_utils.h
index e10672bbd40d9a306c87b8093d1c3b220369f20c..0ceefcd0b1da5d1c746c8f0fe23a42b0f6295447 100644
--- a/components/mus/ws/test_utils.h
+++ b/components/mus/ws/test_utils.h
@@ -76,6 +76,10 @@ class WindowTreeTestApi {
   void ClearAck() { tree_->event_ack_id_ = 0; }
   void EnableCapture() { tree_->event_ack_id_ = 1u; }
 
+  void OnWindowInputEventAck(uint32_t event_id, mojom::EventResult result) {
+    tree_->OnWindowInputEventAck(event_id, result);
+  }
+
  private:
   WindowTree* tree_;