Write mojom and StructTraits for DisplaySnapshot.

ui/display/mojo/display_snapshot_mojo.mojom

+// Copyright 2017 The Chromium Authors. All rights reserved.

[kylechar, 2017/02/09 15:05:54]

Huh? I don't understand why there are two mojom definitions for both
DisplayConnectionType and DisplaySnapshotMojo.

[thanhph1, 2017/02/10 19:54:32]

I removed this enum here. Check the display_constants.mojom for enum
DisplayConnectionType

+// 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/display/mojo/display_mode.mojom";
+import "ui/gfx/geometry/mojo/geometry.mojom";
+
+enum DisplayConnectionType {
+  DISPLAY_CONNECTION_TYPE_NONE = 0,
+  DISPLAY_CONNECTION_TYPE_UNKNOWN = 1,
+  DISPLAY_CONNECTION_TYPE_INTERNAL = 2,
+  DISPLAY_CONNECTION_TYPE_VGA = 4,
+  DISPLAY_CONNECTION_TYPE_HDMI = 8,
+  DISPLAY_CONNECTION_TYPE_DVI = 16,
+  DISPLAY_CONNECTION_TYPE_DISPLAYPORT = 32,
+  DISPLAY_CONNECTION_TYPE_NETWORK = 64,
+  DISPLAY_CONNECTION_TYPE_VIRTUAL = 128,
+
+  // Update this when adding a new type.
+  DISPLAY_CONNECTION_TYPE_LAST = DISPLAY_CONNECTION_TYPE_VIRTUAL
+};
+
+// Corresponds to display::DisplaySnapshotMojo
+struct DisplaySnapshotMojo {
+  int64 display_id;
+  gfx.mojom.Point origin;
+  gfx.mojom.Size physical_size;
+  display.mojom.DisplayConnectionType type;
+  bool is_aspect_preserving_scaling;
+  bool has_overscan;
+  bool has_color_correction_matrix;
+  string display_name;
+  string sys_path;
+  array<display.mojom.DisplayMode> modes;
+  array<uint8> edid;
+  int64 current_mode_index;
+  int64 native_mode_index;
+  int64 product_id;
+};