StructTraits to map mus::mojom::Event to unique_ptr<ui::Event>

ash/mus/accelerator_registrar_impl.h

Index: ash/mus/accelerator_registrar_impl.h
diff --git a/ash/mus/accelerator_registrar_impl.h b/ash/mus/accelerator_registrar_impl.h
index 2c52d455c452c68b83616f3b3b0c511a3dad361c..695cca714be73263645cba19e11c5c2aedf859e9 100644
--- a/ash/mus/accelerator_registrar_impl.h
+++ b/ash/mus/accelerator_registrar_impl.h
@@ -40,8 +40,7 @@ class AcceleratorRegistrarImpl : public ::mus::mojom::AcceleratorRegistrar,
   // specified id.
   bool OwnsAccelerator(uint32_t accelerator_id) const;
 
-  void ProcessAccelerator(uint32_t accelerator_id,
-                          ::mus::mojom::EventPtr event);
+  void ProcessAccelerator(uint32_t accelerator_id, const ui::Event& event);
 
  private:
   struct Accelerator;