Write mojom and StructTraits for DisplaySnapshot.

ui/display/mojo/display_constants.mojom

Index: ui/display/mojo/display_constants.mojom
diff --git a/ui/display/mojo/display_constants.mojom b/ui/display/mojo/display_constants.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..4ce8c1e46d5de2e4ed9cd4e0a59d0e4cd20b0ab8
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+++ b/ui/display/mojo/display_constants.mojom
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+// 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.
+
+module display.mojom;
+
+// Video output types.

[kylechar, 2017/02/10 21:40:29]

The video output types comment isn't useful.

[thanhph1, 2017/02/13 20:09:11]

Done.

+// Corresponding to display::DisplayConnectionType
+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,
+};