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

ui/events/mojo/event.typemap

Index: ui/events/mojo/event.typemap
diff --git a/ui/events/mojo/event.typemap b/ui/events/mojo/event.typemap
new file mode 100644
index 0000000000000000000000000000000000000000..9b5bce93567a0f73369f29eb91ea35af0e0f6932
--- /dev/null
+++ b/ui/events/mojo/event.typemap
@@ -0,0 +1,17 @@
+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+mojom = "//components/mus/public/interfaces/input_events.mojom"
+public_headers = [ "//ui/events/event.h" ]
+traits_headers = [ "//ui/events/mojo/event_struct_traits.h" ]
+deps = [
+  "//ui/events:dom_keycode_converter",
+  "//ui//events",
+]
+sources = [
+  "//ui/events/mojo/event_struct_traits.h",
+  "//ui/events/mojo/event_struct_traits.cc",
+]
+# TODO(moshayedi): crbug.com/617167. Map mojom.Event directly to ui::Event.
+type_mappings = [ "mus.mojom.Event=std::unique_ptr<ui::Event>(pass_by_value)" ]