Add a mojom/StructTrait for display::Display.

ui/display/mojo/display_struct_traits.h

Index: ui/display/mojo/display_struct_traits.h
diff --git a/ui/display/mojo/display_struct_traits.h b/ui/display/mojo/display_struct_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..3732a260a211ec3a7c4189512751ea72acc07b91
--- /dev/null
+++ b/ui/display/mojo/display_struct_traits.h
@@ -0,0 +1,64 @@
+// 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.
+
+#ifndef UI_DISPLAY_MOJO_DISPLAY_STRUCT_TRAITS_H_
+#define UI_DISPLAY_MOJO_DISPLAY_STRUCT_TRAITS_H_
+
+#include "ui/display/display.h"
+#include "ui/display/mojo/display.mojom.h"
+
+namespace mojo {
+
+template <>
+struct EnumTraits<display::mojom::DisplayRotation, display::Display::Rotation> {
+  static display::mojom::DisplayRotation ToMojom(
+      display::Display::Rotation type);
+  static bool FromMojom(display::mojom::DisplayRotation type,
+                        display::Display::Rotation* output);
+};
+
+template <>
+struct EnumTraits<display::mojom::TouchSupport,
+                  display::Display::TouchSupport> {
+  static display::mojom::TouchSupport ToMojom(
+      display::Display::TouchSupport type);
+  static bool FromMojom(display::mojom::TouchSupport type,
+                        display::Display::TouchSupport* output);
+};
+
+template <>
+struct StructTraits<display::mojom::Display, display::Display> {
+  static int64_t id(const display::Display& display) { return display.id(); }
+
+  static const gfx::Rect& bounds(const display::Display& display) {
+    return display.bounds();
+  }
+
+  static const gfx::Rect& work_area(const display::Display& display) {
+    return display.work_area();
+  }
+
+  static float device_scale_factor(const display::Display& display) {
+    return display.device_scale_factor();
+  }
+
+  static display::Display::Rotation rotation(const display::Display& display) {
+    return display.rotation();
+  }
+
+  static display::Display::TouchSupport touch_support(
+      const display::Display& display) {
+    return display.touch_support();
+  }
+
+  static const gfx::Size& maximum_cursor_size(const display::Display& display) {
+    return display.maximum_cursor_size();
+  }
+
+  static bool Read(display::mojom::DisplayDataView data, display::Display* out);
+};
+
+}  // namespace mojo
+
+#endif  // UI_DISPLAY_MOJO_DISPLAY_STRUCT_TRAITS_H_