Add a mojom/StructTrait for display::Display.

services/ui/public/interfaces/display/display.typemap

Index: services/ui/public/interfaces/display/display.typemap
diff --git a/services/ui/public/interfaces/display/display.typemap b/services/ui/public/interfaces/display/display.typemap
new file mode 100644
index 0000000000000000000000000000000000000000..c1a882216c5b79bc1a2768ddd5391b705dddec34
--- /dev/null
+++ b/services/ui/public/interfaces/display/display.typemap
@@ -0,0 +1,23 @@
+# 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 = "//services/ui/public/interfaces/display/display.mojom"
+public_headers = [ "//ui/display/display.h" ]
+traits_headers =
+    [ "//services/ui/public/interfaces/display/display_struct_traits.h" ]
+sources = [
+  "//services/ui/public/interfaces/display/display_struct_traits.cc",
+]
+public_deps = [
+  "//ui/display",
+]
+deps = [
+  "//ui/gfx/geometry",
+]
+
+type_mappings = [
+  "display.mojom.Display=display::Display",
+  "display.mojom.DisplayRotation=display::Display::Rotation",
+  "display.mojom.TouchSupport=display::Display::TouchSupport",
+]