Add DisplayPlacement/Layout mojoms + StructTraits.

ui/display/mojo/display_layout_struct_traits.h

Index: ui/display/mojo/display_layout_struct_traits.h
diff --git a/ui/display/mojo/display_layout_struct_traits.h b/ui/display/mojo/display_layout_struct_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..1b9c4533a2373a931c35c3c8a5a73a38387f8420
--- /dev/null
+++ b/ui/display/mojo/display_layout_struct_traits.h
@@ -0,0 +1,91 @@
+// Copyright 2017 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_LAYOUT_STRUCT_TRAITS_H_
+#define UI_DISPLAY_MOJO_DISPLAY_LAYOUT_STRUCT_TRAITS_H_
+
+#include <memory>
+#include <vector>
+
+#include "ui/display/display_layout.h"
+#include "ui/display/mojo/display_layout.mojom.h"
+
+namespace mojo {
+
+template <>
+struct EnumTraits<display::mojom::Position,
+                  display::DisplayPlacement::Position> {
+  static display::mojom::Position ToMojom(
+      display::DisplayPlacement::Position type);
+  static bool FromMojom(display::mojom::Position type,
+                        display::DisplayPlacement::Position* output);
+};
+
+template <>
+struct EnumTraits<display::mojom::OffsetReference,
+                  display::DisplayPlacement::OffsetReference> {
+  static display::mojom::OffsetReference ToMojom(
+      display::DisplayPlacement::OffsetReference type);
+  static bool FromMojom(display::mojom::OffsetReference type,
+                        display::DisplayPlacement::OffsetReference* output);
+};
+
+template <>
+struct StructTraits<display::mojom::DisplayPlacementDataView,
+                    display::DisplayPlacement> {
+  static int64_t display_id(const display::DisplayPlacement& placement) {
+    return placement.display_id;
+  }
+
+  static int64_t parent_display_id(const display::DisplayPlacement& placement) {
+    return placement.parent_display_id;
+  }
+
+  static display::DisplayPlacement::Position position(
+      const display::DisplayPlacement& placement) {
+    return placement.position;
+  }
+
+  static int offset(const display::DisplayPlacement& placement) {
+    return placement.offset;
+  }
+
+  static display::DisplayPlacement::OffsetReference offset_reference(
+      const display::DisplayPlacement& placement) {
+    return placement.offset_reference;
+  }
+
+  static bool Read(display::mojom::DisplayPlacementDataView data,
+                   display::DisplayPlacement* out);
+};
+
+template <>
+struct StructTraits<display::mojom::DisplayLayoutDataView,
+                    std::unique_ptr<display::DisplayLayout>> {
+  static bool mirrored(const std::unique_ptr<display::DisplayLayout>& layout) {
+    return layout->mirrored;
+  }
+
+  static bool default_unified(
+      const std::unique_ptr<display::DisplayLayout>& layout) {
+    return layout->default_unified;
+  }
+
+  static int64_t primary_display_id(
+      const std::unique_ptr<display::DisplayLayout>& layout) {
+    return layout->primary_id;
+  }
+
+  static const std::vector<display::DisplayPlacement>& placement_list(
+      const std::unique_ptr<display::DisplayLayout>& layout) {
+    return layout->placement_list;
+  }
+
+  static bool Read(display::mojom::DisplayLayoutDataView data,
+                   std::unique_ptr<display::DisplayLayout>* out);
+};
+
+}  // namespace mojo
+
+#endif  // UI_DISPLAY_MOJO_DISPLAY_LAYOUT_STRUCT_TRAITS_H_