Use display::DisplayMode in ozone/drm/gpu

ui/ozone/platform/drm/common/drm_util_unittest.cc

Index: ui/ozone/platform/drm/common/drm_util_unittest.cc
diff --git a/ui/ozone/platform/drm/common/drm_util_unittest.cc b/ui/ozone/platform/drm/common/drm_util_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1739d3e1e5becbc67c58853d93de334f56209678
--- /dev/null
+++ b/ui/ozone/platform/drm/common/drm_util_unittest.cc
@@ -0,0 +1,30 @@
+// 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.
+
+#include "ui/ozone/platform/drm/common/drm_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/geometry/size.h"
+#include "ui/ozone/common/gpu/ozone_gpu_message_params.h"
+
+namespace ui {
+
+class DrmUtilTest : public testing::Test {};
+
+TEST_F(DrmUtilTest, RoundTripEquivalence) {
+  DisplayMode_Params orig_params;
+
+  orig_params.size = gfx::Size(101, 42);
+  orig_params.is_interlaced = true;
+  orig_params.refresh_rate = 3.14;
+
+  auto udm = CreateDisplayModeFromParams(orig_params);
+  auto roundtrip_params = GetDisplayModeParams(*udm.get());
+
+  EXPECT_EQ(orig_params.size.width(), roundtrip_params.size.width());
+  EXPECT_EQ(orig_params.size.height(), roundtrip_params.size.height());
+  EXPECT_EQ(orig_params.is_interlaced, roundtrip_params.is_interlaced);
+  EXPECT_EQ(orig_params.refresh_rate, roundtrip_params.refresh_rate);
+}
+
+}  // namespace ui