Add a mojom/StructTrait for display::Display.

services/ui/public/interfaces/display/display.mojom

Index: services/ui/public/interfaces/display/display.mojom
diff --git a/services/ui/public/interfaces/display/display.mojom b/services/ui/public/interfaces/display/display.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..70111918ad8034a5c09e1e6d95396a2b39c046f4
--- /dev/null
+++ b/services/ui/public/interfaces/display/display.mojom
@@ -0,0 +1,33 @@
+// 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.
+
+module display.mojom;
+
+import "ui/gfx/geometry/mojo/geometry.mojom";
+
+// Corresponds to display::Display::Rotation.
+enum Rotation {
+  VALUE_0,
+  VALUE_90,
+  VALUE_180,
+  VALUE_270,
+};
+
+// Corresponds to display::Display::TouchSupport.
+enum TouchSupport {
+  UNKNOWN,
+  AVAILABLE,
+  UNAVAILABLE,
+};
+
+// Corresponds to display::Display.
+struct Display {
+  int64 id;
+  gfx.mojom.Rect bounds;
+  gfx.mojom.Rect work_area;
+  float device_scale_factor;
+  Rotation rotation;
+  TouchSupport touch_support;
+  gfx.mojom.Size maximum_cursor_size;
+};