Create mojom and StructTraits for ui/display/types/display_mode.cc

ui/display/mojo/BUILD.gn

Index: ui/display/mojo/BUILD.gn
diff --git a/ui/display/mojo/BUILD.gn b/ui/display/mojo/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..77a3d5d7bec5e668bca41cfc1302a22f01c73155
--- /dev/null
+++ b/ui/display/mojo/BUILD.gn
@@ -0,0 +1,25 @@
+# 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.
+
+import("//mojo/public/tools/bindings/mojom.gni")
+
+mojom("interfaces") {
+  sources = [
+    "display_mode.mojom",
+  ]
+
+  public_deps = [
+    "//ui/gfx/geometry/mojo",
+  ]
+}
+
+mojom("test_interfaces") {
+  sources = [
+    "display_struct_traits_test.mojom",
+  ]
+
+  public_deps = [
+    ":interfaces",
+  ]
+}